Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Type: OLED color screen, Battery Capacity: 130mAh, Chip NRF52832, bluetooth Version BLE 4.0, Size: 0.95 inch, Standyby Time: 6-10days
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($26.52): band10
2. ($26.52): BGAFF10OFF
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGM7E, TTxBG10, BG3CSUM, BGLM7, AFfbG10, 502C6B, BGXMLM7, 0e7f33, FBCOUPON1
(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 LYNWO M7 Smart Watch.
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)).