Compatible OS Android 5.1 or above; iOS 10.0 or above, Brand KOSPET, Operating Mode Full-Touch, Product Name TANK M1, APP Name Da Fit, Bluetooth Version BT 5.0.
Check coupons or create price alert down below. What is the 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 code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($55.24): BG284c49
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): TANKM1FANS, BGd086ee, BGJP99333, BGb227a5, BG8ede1d, BGb9bac2, BG6ad230, BG87a8a2, BG95b8a8, BG8f0384, BG14b8f3, BG4faf7a, BG6b13a6, BGJP116, BGbf11dd
(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 KOSPET TANK M1 Smart Watch? There we go. The lowest price was: $39.99.
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)).