When I was updating this page, then coupon price was $33.99 for GT4 Pro Smart Watch (in Banggood). Just check coupons out (with price alert and history). What is best price?
GT4 Pro 1.47 inch 360*360 HD Screen bluetooth Call ECG Heart Rate Blood Pressure SpO2 Monitor IP67 Waterproof Offline Payment Smart Watch – NO.1
Latest coupon code price check (UTC time):
Banggood ($33.99)
Banggood warehouse is located in China. CouponsFromChina software could not find any coupon for this product in Banggood. Is it a low price? This price is higher than average price ($28.49) for this item.
Link: Banggood product page
Price: $33.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for GT4 Pro 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)).