Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood).
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGQ1S28, BGBK15, BGPro19, 0e7f33, BGBAK15, band10, BGCuponation10, BGWRIBAND10, 6GSGIT, BG51f436, BGc70579, BGbf11dd
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Bakeey Q1S BT5.0 Fitness Tracker.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).