Check coupons or create price alert down below. Best price?
Weight About 226g/500g, Switch Push Switch, LED NM1 LED, 4Modes High – medium – Low – Strobe（Double click）, Dimensions 152mm(length)x 64mm(head)x 30mm(Tail), Distance 500-1000M, Case material Aviation aluminum outer shell (hard oxidation), Model Name X40, Emitted Color White light, Battery For 1x 21700 battery, Brand Name AloneFire, Flashlight Color Black
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($59.00): FIN8217
2. ($73.35): 00c906
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): BGflashlight, BG10OFFAFF1, BANGGOODSD, BGTorch4
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Alonefire X40 Flashlight with 21700 Battery 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)).