Item model number S12, Color temperature 6500k, Charging indicator Red (charging)/green (full), Battery capacity 350mAh, Waterproof grade IP65, Light source model LH351B/Luminus SST20, Product weight 19g, Input current 500mA, Charging port specification Type-c, Battery model Polymer lithium battery, Battery life 32h, Anti-drop height 1.5m, Shell material PC+304 stainless steel, Charging time 35 minutes, Overcharge protection voltage 4.25v, Input voltage 5V, Over-discharge protection voltage 2.8V, Product use environment 10-40 degree, Product size 16.8mm*60.5mm.
Check coupons or create price alert down below. 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.
Link: Banggood product page
1. ($13.99): FIN0327
2. ($14.07): BGAlerabatI
3. ($14.39): BGtorch2
this code has to be applied in your 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/i1u
Old coupons (from the oldest to the newest): BGtorch3, BGAlerabat15, BGtorch7
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for S12 400lm Mini LED Keychain Flashlight. The lowest price was: $12.99.
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)).