that's pretty horrible battery life, with original Amazfit Bip you can have easily 35-40 days battery life out of the box and even after years 20-25+ days with always readable display, always on Bluetooth, I'm now on my second one since first one fall apart, then I had short stint with OLED smart watch which lasted only few days and had problem to read it outdoors until I gave up and after few months bought used Amazfit Bip for 20USD, which serves me until now

actually main reason why not go for Pebble instead Amazfit Bip would be for me extremely short battery life (and huge bezel mentioned in article) and price, while hardly offering more useful features worth the disadvantages