Aliexpress
Click here… to search for Mibro Color Fitness Tracker on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (25.99 USD): BGac6975
Coupon (25.99 USD): BGfa38af
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGMIBCL, BG6279eb, BGWRIBAND10, BGbrmico, BGG74668, BG02e33c, BGe14e13, BGfb704d, BG5ac6ac, BG1bbc55, BG461fc4, BGbd2eb2, BGd3437b, BG681661, BGc60421, BG51f436, BG3846e2, BGfe3870
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Mibro Color Fitness Tracker.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).