Basically copy coupon, view price history or create e-mail price alert. Best price?
Bluetooth Version BT 5.0, Brand Mibro, Compatible OS Android 5.0 or above; iOS 10.0 or above, Operating Mode Full-Touch, APP Name Mibro Fit, Flash 64M Bit Flash / 160K Byte Ram, Model X1
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 Hong Kong. Only one coupon available!
Link: Banggood product page
1. ($42.99): BGb0a59b
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG0c255d, BGSFANV21, BGf666e6, BGc70579, BGMBX1, BG852ed6, BGHOBBY18, BG093671, BGJP61703, BGJP084, BG25464f, BG611682, BGJP8508, BGJPI85, BG44adc2
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for Mibro X1 Smart Watch? There we go.
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)).