Kospet Rock Fitness Tracker (Banggood, Aliexpress: Charging Type: Magnetic Charging, Compatible OS Android 5.1 or above /iOS 10.0 or above, Size: 1.69 inch, Bluetooth Version BT 5.0, Operating Mode Full Touch, Model Rock, Using time: About 14 days, Multi-sport Modes Support(20 Kinds Sport Modes), Charging Time: About 2 hours, Type: TFT, Customized Watch Face Support, APP Name DaFit, Resolution: 240*280, Brand Kospet, Battery Capacity: 350mAh, Standby Time: About 50 days (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. What is best price?
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 price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($51.07): BGc70579
2. ($51.07): BGbf11dd
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BGKPROCK, BGNYROCK, band10, BGSEArock, BG3ROCK, BGKSROCK, BGWRIBAND10, BG8ea462, BG20aef5, 6GSGIT, BG81ef26, BGaae78b, BG51f436, BGa30930, BGfa96ff, BG3bd1cb, BG2202FANS12, BGa32675, BG6eb515, BG95aa1e
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Kospet Rock Fitness Tracker [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Kospet Rock Fitness Tracker. The lowest price was: $30.99.
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)).