Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (48.87 USD): BGc70579
Coupon (48.87 USD): BGbf11dd
(CouponsFromChina.com tip: apply code in your basket (cart) 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): BGc6bf44, BG2dfd24, BGBF1111, BGbe9edf, BG51f436, BGdd02da, BG3078e9, BGa30421, BG2202FANS7, BGff1076, BG0b2d32, BGf3ebee
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Zeblaze Lily Women Smart Watch is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).