Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
4x Cree XML U2, 3200 lm, Battery Quantity: 2x 18650 / 26650 battery (not included)
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
SolarStorm DX4S LED Diving Flashlight IPX8 Waterproof 4x L2 3 Mode 4500 Lumens 26650 Submarine Dive Torch Lamp | $36.86 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
1. ($43.19): BGAlerabat15
coupon code has to be applied in shop’s cart 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): 914636, BGDX4S, cmb1, BGTORCH, bGhOnEy10, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGFLS15, FIND16270, BG10OFFAFF1, BANGGOODSD, BGTorch4, 00c906, BGtorch3
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for SolarStorm Dx4S Diving Flashlight is here.
Price records source(s): Gearbest, 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)).