$39.99 – ET340 1.46 inch Smart Watch (Banggood, Aliexpress: ET340 1.46 inch HD Screen Uric Acid Blood Lipids ECG Heart Rate Blood Pressure SpO2 Blood Glucose Monitor Sleep Monitoring SOS Function bluetooth Call Multi-sport Modes Music Playback IP67 Waterproof Smart Watch – Leather Black (the best price with coupon)).
ET340 1.46 inch Smart Watch is for $39.99 (in Banggood). Just check coupons out (with price alert and history). You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood ($39.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Is it expensive? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $37.99)
Link: Banggood product page
Price: $39.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGESJY8
(there’s a little possibility that old coupon will work)
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
Check out price history chart (for all/most countries) for ET340 1.46 inch Smart Watch. The lowest price was: $36.99.
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)).