Thrunite BSS W1 Review (693 Lumens, SST20, 16340 Battery, Onboard charging)

Thrunite has a new light in their BSS (Black Scout Survival) series of lights this time focused on the compact small EDC market. This light produces 693 lumens from an SST20 LED and a 16340 battery. It has a deep carry pocket clip, and is available in two different colored bodies. It’s very similar to the Wowtac W1 I looked at earlier in the year with a few differences. Thanks to Thrunite for sending this too me to look at, if I have a discount for it make sure to check the description below.


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Pickup the Thrunite BSS W1 from Amazon. Don’t forget to apply the Coupon code BSS202012 to get an additional 20% off

BSS W1 Green – 20% off with coupon

W1 Blue – (No extra discount)


Packaging & Accessories

Packaging here is a rather small cardboard box that folds up from the top. On the side it lists the option the light is in, interestingly a black version and NW is optional here but those options are not listed for sale currently. Inside you get the light itself, along with a 16340 battery. Mine here happens to say it’s a Wowtac (Sister company) so maybe they had some wrappers leftover? Other accessories include the pocket clip, microUSB to USB cable for charging, manual and a bag of 2 spare orings, 2 spare USB covers. 



The W1 is made from aluminum and at current time is available in an OD Green and a Blue. I like the green color here myself quite a bit. The back end is mostly flat, it has a small milled center thats slightly lower with the Black Scout Survival logo engraved in the center. On mine the logo doesn’t really seem to be lined up at all with the head. The tail is magnetic and pretty strong, it has no trouble holding the weight of the light up. 

The pocket clip attaches at the rear of the light only, it’s a non captured clip and the tail and body are a one piece design. The groves milled into the body section are nice, they give quite a bit of grip but should clean up much better than traditional diamond knurling. The body also tapers in, to give the light the feeling of thinness

The head section of the light is a decent amount larger than the body, especially around the button and USB port area. This does change how the clip fits the light, more on that in a minute. This larger section serves as kind of an anti roll ring. The button is slightly recessed and protected with the aluminum around it. There is a LED underneath to give a charging status. Opposite the button is the charging port. It’s covered with a silicone cover. Not the best design I have seen but effective for the price. The front has a very shallow bezel that’s smooth. It looks to be a 2 piece design but I can’t get it to budge. The lens is anti reflective coated and the reflector does have an orange peel. The LED centering isn’t perfect but this doesn’t seem to have a noticeable effect on the beam.


Size & Weight

I measured the length here at 67mm, maximum diameter at 23.22mm at the head, and minimum diameter at the body at 18mm. Weight with the battery and clip was 51.5g. The light is IPX8 water rated.


The Competition

The closest light I have to the Thrunite BSS W1 is the Wowtac W1. As you may or may not know Thrunite and Wowtac are sister companies, and these two lights are very similar in terms of physical appearance, design, and shared parts. There are some differences, most obvious is the body tube differences. The Thrunite BSS W1, has in my opinion a more attractive body tube, with its linear milling, it’s also a little slimmer by 2mm. The heads are the exact same design with the only difference being color, and accents. They have the same button, USB Cover, bezel, lens, and reflector. The heads are also interchangeable between lights. 


The Olight S1R Baton II and S1 Baton Mini are both smaller then the Thrunite BSS W1, in terms of length, and as far as the mini has very similar maximum performance. One big difference is that the Olights carry bezel up, and the Thrunite is bezel down carry.  



The Thrunite BSS W1 uses a non captured dual direction clip that only fits on the tail of the light. It’s a pretty tight clip, enough so that it does scratch the anodizing, it’s very deep carry which is great and has enough space to fit over the pocket of my jeans to clip onto the pocket. The light also has a small place in the tail to allow a small diameter lanyard to be attached if you wish.


LED & Runtime

The Thrunite BSS W1 uses a SST20 LED in Cool White. No tint data is given directly. When I compare the beam to the Wowtac W1 it’s very similar, the SST20 in the Thrunite is slightly more neutral in tint to the Cree G2 in the Wowtac. The beam hot spot is slightly large as well. On this style of light I personally prefer a TIR style optic, because I think it provides a better overall beam for EDC use, that said the traditional reflector design here does throw further. 


Thrunite lists the output specs of the BSS W1 as the following.

  • Firefly 0.5 Lumens
  • Low  7.5 Lumens
  • Medium 58 Lumens
  • High 215 Lumens 
  • Turbo 693 Lumens with step down to 215 lumens after 1 min.


Heat & Runtime

Turbo runtime on the BSS W1 was 1:15 before step down, relatively short but this is a small light. Past here it seems to follow the curve of a non regulated driver. It ran at 30% relative output for right at an hour before slowly stepping down. Total runtime was 1:43:00 before the light shut off with the battery measuring 2.925v.



UI here is extremely simple. From off, long press to enter firefly mode at 0.5 lumens. Once on long press to cycle through the 3 normal modes. Double press to go to turbo, or triple press to go to strobe. There is memory mode here. No lockout mode is here but you can mechanically lock the light out if you wish by a ¼ twist. 



Recharging is accomplished via MicroUSB onboard the light. The charging port has a small silicone gasket that’s hinged at the top at one point. It’s not the best design I have seen, not the worst either. Charge time took 1:21:00 in my testing, with the max charge rate being .46A which is safe for this small of battery. The fully charged battery measured 4.145V. 



  • Very inexpensive (Less than $30)
  • Only a cool white emitter available at this time.
  • Blue and Green anodizing are available.



  • Not a crazy amount of performance but it is small.
  • MicroUSB instead of USB-C
  • Bit of a green tint on lower power modes.



If you are new to EDCing a flashlight, and wanted to try something small out, this would be a great option to try without breaking the bank. If you just wanted a small flashlight to use on a hat, carry in a bag or purse, or just wanted an impulse buy in a color you liked this fits all those applications here too. 


For EDC this is a decent light. The clip design allows for a pretty deep carry which I like, but the head design means I need to pull it out slightly to slip the clip over the side of my pocket. I like that it’s available right away in colors, and that they didn’t wait for a special edition with colors later on. It’s a little disappointing to see that it didn’t go to USB-C for the onboard recharging. 


The Thrunite BSS W1 is very similar to the Wowtac W1 that I reviewed last year. The exterior designs are slightly different, and I prefer the Thrunite BSS W1 here. I like the two anodizing colors being offered here an OD green and a nice blue. The SST20 LED is a little brighter than the Cree emitter used in the Wowtac W1. For the minor price difference (Around $25 total price) here between the two models and the availability of body colors, I would say to  buy the Thrunite BSS W1 over the Wowtac W1 at this time but I can’t say you would be wrong choosing either. 

Pickup the Thrunite BSS W1 from Amazon. Don’t forget to apply the Coupon code BSS202012 to get an additional 20% off

BSS W1 Green – 20% off with coupon

W1 Blue – (No extra discount)

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