Just check coupons out (with price alert and history). Best price?
Net Weight: 125 gram, Digital current regulation on lower brightness, with Aux leds ; with switch leds, Size: 112mm(L)x 37.5mm(Head)x 26mm(Body), 98% AR coating glass lens, IPX6 waterproof, 25 degree angle TRI lens, 1x 21700 / 18650
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($53.48): cbrIDgTec
2. ($53.48): cbridgtec
3. ($53.48): BG1128
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 502C6B, F7BG0, BGFIRE, e2bcea, linepayflt, FFE07, BG2434P, F7BG, BGF1111, BGBFCR41, BGFIRL
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 4 another warehouse/versions!
1. China – Fireflies E07 XPL NW 5000K Flashlight ($-3)
2. China – Fireflies E07 XPL NW 4000K Flashlight ($-3)
3. China – Fireflies E07 XPL CW Flashlight ($-3)
4. China – Fireflies E07 Nichia 219B Flashlight ($-3)
Price history and price alert
Price history (for all/most countries) for Fireflies E07 SST20 NW Flashlight is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).