You can create price alert here, copy coupons and view price history. What is the best price?
Reflector Precise metal filmed, Housing Premium hard-anodized anti-abrasive finish, Switch Single switch all-round, Weight 26.2g, Size L53 * W30 * H12.4mm, Glass Filmed mineral glass, Brand Fitorch K3 Lite, Material Aluminum body, Input 2.8Vdc-4.2Vdc, LED 1* XPG2/XPG3 white LED + 1* XPE2 red LED + 1*High rate 370nm UV LED, Output Max 550 lumens
Aliexpress
I could not find it 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. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGK3, 502C6B, BGF1111, 0e7f33, BGFITORCHSS, BGFLS15, BGAFF10OFF, BGCuponation10, 4BLF, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BANGGOODSD, BGTorch4, 00c906, BGtorch2, BGtorch3
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Fitorch K3 Lite Keychain Flashlight.
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)).