Go down and check coupons out. Remember to check price history if it is available. Best price?
Resolution: 320*320pixels, Type: Full round MIP Transflective TFT, Battery Capacity: 450mAh, Width: about 22mm, About 70 Hours(Power Saving Exercise mode), Material: Silicone, Length: about 195mm, About 14 days(Ultra endurance mode), Size: 1.34 Inch, Standby Time: About 7 days(Smart mode), Charging Time: About 3hours, Charging Type: Magnetic charging, About 35 Hours(Accurate Exercise mode)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. 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
1. ($206.99): amazfit100
2. ($224.99): 7d18f7
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGAM3EN, BGAM3197, BGA3EN
(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 Xiaomi Amazfit Stratos 3 Global 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)).