You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
sauna and diving), Width: About 20mm, Standby Time: About 14 days, Size: 1.22 inch, Charging Type: Dock charging, Bluetooth Version BT 5.1 or above, Type: AMOLED, APP Name Huawei Sport Health, Using time: About 7 days, Product weight: 29g(Without strap), Material: Silicone, Charging Time: About 2 hours, Resolution: 454*454pixels, Battery Capacity: 215mAh, Product size: 42×42×9mm, Waterproof 5ATM(not available for bathing
Banggood
Banggood warehouse is located in China. We have found one coupon for this product!
Link: Banggood product page
1. ($236.32): bgwp
coupon code has to be applied in shop’s 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): PICODICOM, BGGT242S, Email5
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Do you need price history chart (for all/most countries) for Huawei WATCH GT 2 Sport 42mm Smart Watch? There we go.
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)).