Basically copy coupon, view price history or create e-mail price alert. Best price?
Battery Capacity: 180mAh, Size: 1.3inch, Female Cycle Tracker Support, Type: IPS, 75 mm (short), Weight: about 51g, Charging Type: Magnetic charging, Strap Width: 20mm, Standby Time: About 30 days(Power-saving Scenario), Strap Length: 120mm (long), Waterproof 3ATM Waterproof, Dial Size: about 45*45*12mm, Bluetooth Version BT 5.1, Resolution: 240*240pixels, Charging Time: About 1.5 hours, Using time: About 18 days(Typical Usage Scenario)
Aliexpress
There’re some similar (or not) items on Aliexpress
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. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGZEGTR, BGGRZE, BGSEOGTR, BGZEGTR2, BGGTR24, band10, BGNYHT1, BGUSZEGTR, BGZEGTR3, BGZBGTR, BGPLGTR, BGCZGTR, BGZBGTR3, BGZBGTR2, BGCuponation10, BGGTRZE, BGD3FC46, BGZBLGTR, BG47bce8, BGd62abd, BG5fffae, BGWRIBAND10, BG6dbab5, BGfa41ef, BG77GTR, BG9393a2, BG6268c5, BGEU9DPGTR, BG9DPGTR, BG9DEZE2, BGPLZBGTR, BG5564d9, BGd3b707, BG9DEZE1, BG1562d3, BG11ANV07, BGd26bab, BG4caeb8, BGBF1109, BG51f436, BGe4af35, BGe86f3d, BG83e71d, BGcdcfbd, BG92642b, BGc70579, BG00164f, BG2202FANS3, BG3e11ca, BG0d865b, BG7ecf6a, BG3614a9, BGb5983a, BGfcd0d1, BG85ce17, BGf74afd, BG501b33, BG78dc18, BGbf11dd, BGb662cc
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Zeblaze GTR Smart Watch [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Zeblaze GTR Smart Watch.
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)).