Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (41.05 USD): BGc70579
Coupon (41.05 USD): BGbf11dd
(CouponsFromChina.com tip: put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGa5692a, 6GSGIT, BGJPZEM, BG11ANV10, BGBF1108, BG9ebe4a, BGc2f342, BG51f436, BG32f7f0, BG2202FANS6, BGb094e3, BG9d2361, BG66d16c, BGbddb8c
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for Zeblaze Meteor Fitness Tracker.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).