Lens Tempered optical glass, Mode First gear (constant light), Battery life 40 minutes, Shell material Aviation aluminum T6061, Weight 12.3g, Battery 1xAAA battery (not included), Input voltage 0.8-2V, Size 7×1.5cm (lengthx head), LED power 1W, Waterproof IPX8, Reflective material Aluminum alloy reflector cup, Anti-drop height 1.5m, LED wavelength 365nm.
Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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. Only one coupon available!
Link: Banggood product page
1. ($16.68): BGAlerabat15
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGTKUV01, M6434, FIN1734, bgshOOp10, bGhOnEy10, BgoFErTaSchInA10, BgcLuBofErtA10, BGFLS15, 4BLF, BGAFF10OFF, BGCuponation10, BGHONEY2110, BG10OFFAFF, BGwhielabel, BGflashlight, BG10OFFAFF1, BANGGOODSD, BGTorch4, BGtorch3
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for TANK007 UV01 365nm Flashlight? There we go. The lowest price was: $8.99.
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)).