Price history, coupons and price alert are available on this page. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
128x 80, 110mAh, waterproof up to 50 meters, Bluetooth 4.2, 0.78-inch OLED
Banggood
Banggood warehouse is located in Europe 
. There are no coupons available at this moment in Banggood. There’s only 1 record in my database, so I have no idea if the price is OK.
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): miband3EUR, mibannd3c, Miband3BRPT, mibannnd3c, mibannd3d, XIAOMI3, mibandd3c, miband3ptbr, miband3e, mibandhk, MIB3BRPT, M3BRPT, miband93, mibandma, miband20, miband204, 20miband, MibandPT, mibanndd, hkband3, MI3ITA, mibande, mibannnnd, miband3PT, 26band, 3Mumlatzim, 39miband, Mi3Oferta, fdband, 18band, BFMi3PT, Blackbr, BFMI3TOP, QueroMiB3, suecoupon, mi3br12, 12mband3, 19band, bgmi3, itband, MBJan10, Mi3fretebr, dlz3, bgband, BG22band, xiaomi33, bgband1, unboxinghk, 2ANO01B, bgband4, 10ANOBG, band5233, bandsexta, band1422, band18br, e2bcea, CE002, 502C6B, 12sjuros, band88R, zegar12, plmiband, BGabr90, BGabrm3, miband3BG, ptband3, TTxBG10, plmi999, armiband3, band10, BGbpm3, BGBAND23, BGMM3, 2f6553, bgmm3, AFfbG10, bgx3m, 59f3aa, 0e7f33, FBCOUPON1, BGM3AP, BGM3MAY, c7345d, BGBAND3N, BGM3CZ, BGCZMB3, BGESPM3Z, BGEUMB3, BGM3ES15, BGCuponation10, BGWRIBAND10
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history is not available for this item (not enough database records)! The lowest price was $11.45 though.
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)).