medium bright 3h, Input 5V 500mA Operating temperature -20-50℃ Storage temperature -10-35℃ Power interface Micro-USB Waterproof IP45 Angle adjustment Support three-angle adjustment Illumination brightness Low light 17h, highlight 1.3h Lumen 105LM Type of light source LED Color Red Size 48x 28x 32mm / 1.89x 1.10x 1.26inch Weight 27g.
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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. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($27.93): 13f142
this code has to be applied 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): 2be6e9, 935bc1, plxmnl, 0e7f33, FBCOUPON1, BGAFF10OFF, BGCuponation10
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi FH100 Headlamp? There we go. The lowest price was: $16.59.
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)).