Bluetooth Version: Bluetooth 4.0, Built-in chip type: Dialog DA14580, IP rating: IP68, Screen size: 1.1 inch, Battery Capacity: 240mAh.
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($19.14): bgdt15
2. ($20.93): 0e7f33
3. ($21.54): band10
4. ($21.54): AFfbG10
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 502C6B, e2bcea, TTxBG10, 2019SPEDM, BG3CSUM
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – NO.1 F3 Smartwatch Black and Red ($-3)
2. China – NO.1 F3 Smartwatch White and Orange ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for NO.1 F3 Smartwatch? There we go. The lowest price was: $12.99.
Price records source(s): Gearbest, 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)).
