Lumens 1000lm, Waterproof IPX8, Model MC12, Candela 2756cd, Size 65×20.6mm, Lighting time 160h, Lamp beads XP-L HI, Irradiation distance 105m.
Just check coupons out (with price alert and history). Best price?
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 and price update (UTC):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
1. ($35.64): BG10OFFAFF1
coupon code has to be applied in shop’s 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): BGTORCH, M2173, bGhOnEy10, FIN2173, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGFLS15, 7d18f7, BGAFF10OFF, BGCuponation10, 4BLF, BGTFMC12, BGMC12RU, BG10OFFAFF, BGwhielabel, BGflashlight
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for Trustfire MC12 XP-L HI Headlight? There we go. The lowest price was: $19.99.
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)).