$12.99 – Senbono Z145 1.83inch HD Screen bluetooth Call Heart Rate Blood Pressure Blood Oxygen Monitor Sleep Monitoring Multi-sport Modes IP67 Waterproof Smart Watch – Black.
I have just checked coupons. The lowest price I could get is $12.99 for Senbono Z145 Smart Watch (in Banggood). You can create price alert here, copy coupons and view price history. What is best price?
Latest coupon and price update (UTC):
Banggood ($12.99)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Is it a low price? Well, according to CouponsFromChina database this price is the best in history (3 records).
Link: Banggood product page
Price: $12.99
Additional Banggood coupons: first page and second page
This is the best price ever noted in my database!
Old coupons (from the oldest to the newest): BGZ14517
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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 Senbono Z145 Smart Watch. The lowest price was: $12.99.
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)).