“Size: 1.36 inch, Standby Time: About 10-15 days, Type: IPS, Steel. PU Leather, Chipset RTK8762D, Waterproof IP68 Waterproof, Using time: About 4-5 days, Pixel: 390*390 Pixels”, Charging Time: About 3 hours, Model DT3, Case Thickness: About 11.5mm”, Band Width: About 22mm, ECG Heart Rate Monitor Support, “Diameter: About 45mm, bluetooth Version 5.0, “Battery Capacity: 280mAh, Charging Method: Magnetic”, Brand DT.NO1.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
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.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($56.22): BGc70579
2. ($56.22): BGbf11dd
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGDT03, 6GSGIT, BG011f9a, BG51f436, BG94322e, BG3122d7, BGDT3FANS, BG2202FANS13, BGaa54dd
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for DT.NO1 DT3 Smart Watch. The lowest price was: $29.99.
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)).