Tag: USB-C Headlamp

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Sofirn HS20 Review (2700 Lumens, High CRI, USB-C)

It’s been a little while since I took a look at a new headlamp, well that ends today with the Sofirn HS20, a dual emitter headlamp with onboard USB-C charging and a really simple, yet effective interface. Thanks to Sofirn for sending this to me to look at and tell you about. I have been using it the past few weekends for auto and home maintenance. 

 

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Purchase Links

Amazon Coupon Code to Save 20% “20R4QHLW“

Sofirn Direct Coupon Code to save 15% “SDT4CYG2“

Coupon Codes are valid until 6/20/22

 

Packaging & Accessories

Typical basic packaging here from Sofrin, just enough to ship the light safely and nothing more. Accessories include the headlamp, the over the 3 strap headband, 3000mAh 18650 button top battery, USB-A to USB-C charging cable, a lanyard, manual,  and a box of extra origins. 

 

Construction & Design

The light is made of aluminum and hard anodized black, the most durable color. The design here uses the proven form factor of keeping the battery low horizontally, and the emitters above it. The light has 2 emitters one for flood and the other for flow, and I will talk more about those in the LED & Beam section. Above the emitters are the buttons to turn each on and adjust modes. Each are independent which makes the UI here easy. Each button has a green LED’s in side as well that server as a voltage indicator too.

When looking at the emitters, the left side cap unscrews to remove the battery, it goes in plus side facing the charging port which is on the right side under a tail cap showing the USB symbol. Markings are minimal with just the name, model number and battery on the front. On the back you have your CE markings and serial number. On lights with the SFT40 LED, the serial number will end in SF.

 

Retention

The headband it basic but very functional. It’s the standard 3-piece which for this light might be overkill as it’s not that heavy but I like the 3 strap designs as it keeps things in place better I think. There is no grip on the inside of the bands as you see sometimes on premium lights. The elastic has Sofirn woven into the elastic. All this attaches to a silicon mount that attaches to the light inboard of the tail caps. 

 

Size & Weight

I measured the length at 85.53mm, the diameter on the tailcaps at 26mm. Height came in at 47mm, and thickness at 24mm on the tube. Weight with the battery and headband comes in at 6.22oz. The light is IPX68 water and dust rated and has impact resistance to 1M. Here are some comparison photos to other 18650 headlamps. 

 

LED & Beam

The light ships with 2 emitters in 2 different versions. The floody emitter (smaller lens) is a Samsung LH351D in 4750k tint with a CRI of 96 according to my Opple meter. This is the same on both versions. The difference is in the larger Spot emitter. Mine shipped with the Cree XHP 50.2 LED that I measured at 5360k with a CRI of 68. The XHP 50.2 is a bit of an odd choice for a throwy emitter, and as a result Sofirn now sells a version that replaces the XHP with an SFT40 emitter which should increase the throw distances substantially.  When both emitters were on together I measured 5180k and 75CRI. There is some PWM here on all modes, but its minimal.

 

Measured Outputs

I will put up a chart here of my measured outputs vs what Sofirn claims. In general, they are pretty accurate. 

 

Runtime & Heat

With 5 brightness modes, 2 LED’s there are a lot of combinations here, I focused on the higher outputs here to make output graphs with. All of these were tested with the LH351D and XHP50.2 version of the light, and tested on my calibrated (but still homemade) lumen tube and the included 3000mAh Sofirn Battery.

Under Turbo with both emitters on, at the 30 second mark, I measured 2220 lumens, and this declined pretty quickly within 4 minutes it was down to 290 lumens because the heat had climbed to 55C. As the light cools slightly it does step up in brightness to around 500 lumens. Effective runtime here was a little over 2 hours. The light remains on longer then this but only in eco mode. 

I then compared turbo on each emitter independently, and you can see the results of that.

I am currently running a few more runtime tests in High mode and will insert my findings of those here. I don’t expect any surprises. 

 

UI

The User Interface of a headlamp is important, and with the Sofirn HS20 It couldn’t be simpler. The light has 2 emitters, and a dedicated button to operate each. It’s the same UI on both, and neither is codependent on the other. The light has memory mode so when you press either of the buttons it comes on in the mode previously used except for eco or turbo. To change modes you just press and hold to cycle through low, medium, and high. To get into eco just long press from off, and to get to turbo just double click. 

 

Recharging

Recharging here is accomplished via USB-C. It’s under an aluminum screw-on cap on the end of the light. Under the cap, there is a red and green LED’s to give charge status indicators. The light is capable of charging via USB-C PD, and will run when charging but at reduced output. From LVP at 2.798v to Full at 4.165v it took 2:18:00 to fully charge, with the charge rate reaching about 1.5A during the CC charging phase. 

 

Conclusion

Sofrin has another good light on it’s hand here with the HS20. It’s basic UI makes it really functional, and easy to use while at the same time being really effective. With my Cree XHP50.2 version here there isn’t a ton of difference between flood and throw, but that should be greatly improved with Sofirn choosing to swap it out for a SFT40 LED. It’s the version I would recommend you pick up because of that reason. 

The tints are pretty neutral, and I like that it has the flood beam be high CRI, and pretty neural despite a small amount of green tint, which is common for the LH351D LED’s. 

 

Overall a good affordable headlamp that should suit a variety of tasks well. I do wish it had a lower eco mode since 5 lumens is as low as it goes and that’s only in flood mode. My preference would be more around 1 lumen. I think everyone needs a headlamp as you know if you have seen other headlamp reviews I have done. This would be an excellent pickup in my opinion. 

 

Sofirn has generously provided a discount if you choose to pick up this light, I will have that info in the description along with links to where you can pick it up on Sofirn’s website and on Amazon.  

 

Purchase Links

Amazon Coupon Code to Save 20% “20R4QHLW“

Sofirn Direct Coupon Code to save 15% “SDT4CYG2“

Coupon Codes are valid until 6/20/22

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Wurkkos HD20 Review (LH325D, 5000k, USB-C PD, 21700, Headlamp)

Last year I did a review on the Wurkkos FC11, and that light has gone on to become one of the most often recommended lights over on /r/flashlight for good reason. Well today Wurkkos has the new HD20 headlamp. It has 2 emitters including high CRI with neutral white, a 21700 battery for long runtime and USB-C charging that supports PD, all for an affordable price. Thanks to Wurkkos for sending this to me to review. 

 

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Pickup the new Wurkkos HD20 on Amazon at https://amzn.to/38IennG 

Discount: Use the code 3F8GNFJO for 20% off also there is a 5% coupon on the page, for a combined 25% off the list price!

 

Packaging & Accessories

Packaging is a plain and simple orange box with just Wurkkos name on it, I suspect this is one they use with other models too as it’s just slightly too small for this light and there are no descriptors on it. Accessories include the light itself, a 4800mAh 21700 button top battery, elastic head strap, 18650 battery adapter, pocket clip, bag of extras including wrist strap, and 2 spare orings, USB-A to USB-C cable, and a manual.

Construction

The Wurkkos HD20 is made from aluminum, and anodized in a semigloss black. I found no issues with the machining on the light. The tail cap is flat and has a strong magnet that allows the light to safely attach on to any surface I have tried it on. There is a lanyard attachment point on the tail cap as well as some straight knurling. The spring inside is short but stiff.

Threads on the body section are square cut and dry. The body tube itself has ripples for grip and reminds me of a larger version of the Prometheus Beta series. There is a place for the clip to attach at both ends and this also where the straps for the head mount live. 

The head itself is quite long and has a good amount going on, the side has a few areas milled out for design, weight reduction and heat dissipation, including a large milled area in the back that’s a bit unique, as is the knurling on the back side of the head. This does give a bit of grip to turn when  mounted up. The USB-C port is covered by a large silicon cover that does fit the contour of the light well. On top is an Eswitch with translucent silicone cover and LED’s under to give an power level reading. It has a blue ring similar to Olight around the switch. This button does sit proud so it can’t headstand.

 

At the front you have the two emitters, The top being the spot, and the bottom being the flood. Both have aluminum bezels around them that look to be screwed in. The top has a TIR optic with glass over top and a flat front. The bottom uses a diffused lens. The light is IPX-68 rated

 

Size and Weight

Maximum length of this light is 122.5mm, maximum diameter at the head is 30mm, minimum diameter on the body is 26.7mm. Weight with the light, battery, and head strap is 202g. For comparison the Acebeam H30 (Also a 21700 light is) 190g. So it’s in the ballpark but a bit heavy.

 

Here are a few comparison pictures with the Acebeam H30.

 

Retention

The strap is made from a silicone material, it’s the loop type that holds the light in place and allows it to rotate up and down. Attached to this is a basic 3 way elastic band. It’s a less expensive headband which is ok for the price here but functional. I found it only moderately comfortable, the entire setup isn’t’ lightweight, so you need it reasonably tight to keep it in place. I found a bit more comfort if I tightened the top strap to let it carry a majority of the weight. 

A pocket clip is an option on this light, but not one I think will be used very often. It can mount on the top of bottom of the battery tube, head down would be the only way I would attempt to carry it due to how much of the head sticks out if mounted the other way. You could use this to mount to a hat with the 2 way clip but I don’t think this will be used much due to the weight and the fact that it’s a right angle light. To me the pocket clip is pretty much useless but nice that it’s included I guess.

LED & Beam

This light uses 2 LED, for 2 different purposes. First you have the Floody beam of the Samsung LH351D in 5000k at 90CRI. This is the bottom emitter on the light and is rated at 700 lumens. The beam it creates is a smooth even flood, it’s everything its described as. Looking inside it looks like it has a TIR style optic with a diffused lens.

The other LED in use here is the Cree XPL HD for the spot emitter. It’s also in 5000k but only at 70 CRI. It’s the larger emitter on top of the light and has a TIR style optic that creates a spot style beam. The spot is reasonably large, with very little spill. Maximum output here is 1300 lumens.

When used together you get a blend of both worlds. The tints here for me matched well enough I couldn’t tell which emitter is which in just tint. The beam shape isn’t perfectly round which isn’t unexpected. If being used as a headlamp it’s a wider than it is tall.

There is PWM in all modes on this light other then moon and Turbo. Below is a sample of what my oscilloscope showed for both emitters on all modes, and then a sample of what each single emitter showed on medium. I don’t notice it with my eye.

 

 

Exact outputs vary with each emitter, the LH351D topping out with 700 lumens, and the XPL HD at 1300. Combined they make 2000 lumens. Here is the runtime chart showing the different outputs for each mode and emitter. 

 

Heat and Runtime

I ran both emitters with the included 4800mAh battery on maximum brightness, and turbo output held peak output for 2 minutes before stepping down to 20% relative output where it cooled down and then began an oscillation with it’s aggressive active thermal controls of regulating the light between 18% relative output and 40%. This goes on for nearly 3 hours, before the last 30 minutes the spike is larger 15% to 70%. The last hour is a linear decrease to zero. Total runtime was right at 4 hours. Max heat was 42.5C at 2:50.

I then did runtimes with each emitter independently. Both were very linear non regulated input for the most part. The flood emitter which is less bright over all (700 lumens) lasted 10:10:00. The spot emitter lasted an impressive 14:31:00. 

 

UI

The basics of this light work like you think, click to turn on, long press to cycle through it’s 3 normal modes. Double press to go to turbo. When off, long pressing turns on moonlight mode. The blinking modes require you first to go to turbo then double click again, double clicking each time to cycle then between strobe, sos, and beacon. A single click exits any of these. A triple click allows you to check battery status via the switch on top. 4 fast clicks enters and exits lockout. 

 

Switching between the LED’s is describe in the manual as when the light is on just hold + click + hold. It sounds easy but in practice I have struggled with getting it right the first, second, or third time when I want to switch, it’s frustrating to say the least. 

 

There has been some talk of minor firmware bugs with memory on BLF threads with this light, to me they have not been obvious enough to spot without reading about them first. It’s not uncommon for a manufacturer to update the firmware without telling anyone on the next production run. The FC11 got a revised firmware very quietly. 

 

Recharging

The light has onboard USB-C charging on the back, and the most exciting part is it’s compatible with USB-C to C and USB-C PD. This is the first headlamp I have tested that’s this way, and it’s fantastic. It only took till late in 2020! 

My recharging test was with the included 4800mAh 21700 battery, This is a standard battery I charged from LVP at 2.737v to Full at 4.123V in 3:21:29 which isn’t too bad for this large of cell. The light charged at 2.1A for the first 1:30:00. 

The light can also be used as a powerbank on some phones. I didn’t log any data when trying this but I can tell you that my Samsung Note 8 charges fine with this light and a C to C cable, but my ipad doesn’t recognize it as a power source. 

 

Pro’s

  • Great value, budget friendly, but good quality, full kit.
  • Neutral white with both emitters and high CRI with the flood, Now only if they would go high CRI with the entire light.
  • Supports USB-C to C charging with PD! First headlamp I have tested to do this. 
  • It also acts as a powerbank for some phones.
  • Strong magnet that has no problem holding up the weight here

 

Con’s

  • Pretty heavy, not small
  • Nice that they included a pocket clip but for me it’s pretty much useless here.
  • Switching between LED’s seems to fail at least 50% of the time, this could be me or just a UI that should be better.
  • The head strap could be higher quality.

 

Conclusion

I think Wurkkos has another hit on their hands with the HD20 if weight or size isn’t a big factor in your decision to buy a headlamp. This ticks a lot of my boxes for a headlamp, the biggest being a neutral white light with a pleasing tint, and at least one high CRI option. The long runtimes here are nice too, but you pay the penalty in size and weight from the 21700 and large head.

The biggest areas I see for improvement is a higher quality head strap that’s a little more comfortable. This isn’t a small headlamp so you notice the weight after a while. After I adjusted the straps to take more weight over my head it got a little better. 

 

It’s so nice to see true USB-C support here, it charges via USB-C to C and USB-C PD. You don’t see a speed increase with PD but that’s ok. Not many flashlights at all price levels support this, and as a result it can even be used as a powerbank if needed. 

 

At the time of filming this is right around the $40 price mark, thats a lot of value and I can recommend the Wurkkos HD20. Right now this is my pick for the best large headlamp to buy for Q4 2020. Wurkkos has offered a 20% discount on this light if you buy it on amazon with the code that’s in the description so make sure you check that out to save a few more dollars. 

 

Pickup the new Wurkkos HD20 on Amazon at https://amzn.to/38IennG 

Discount: Use the code 3F8GNFJO for 20% off also there is a 5% coupon on the page, for a combined 25% off the list price!