Aliexpress
Click here… to search for DT NO.1 DT94 Fitness Tracker on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
Coupon (35.85 USD): BGc70579
(CouponsFromChina.com tip: apply it 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): BGDT94, bgdt15, band10, BGDN94, BGWRIBAND10, BG53bbbb, BG54a865, BG0fe5fd, BGb189a4, BG6ce764
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for DT NO.1 DT94 Fitness Tracker is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).