Aliexpress
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
Coupon (22.49 USD): band10
Coupon (22.49 USD): BGWRIBAND10
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply 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): e11f12, 068392, 11b276, 502C6B, e2bcea, BRANDXS, BGXXANES, BGCuponation10
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for XANES W2 Smart Watch Black.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).