Hello, HUAWEI WATCH 2 built-in a 420mAh battery, improved than the previous generation, but not a particularly big leap, in the case of the screen is steady on, daily use can fully maintain 30 hours of battery life, turn off the steady on mode, can also have two days and one night of battery life.
If the Bluetooth, wifi, 4G, NFC, GPS, heart rate is fully turned on, the screen is also set to be steady, it can probably stick to 12-16 hours. You go out at 8:00 in the morning, you can use it until around 12:00 at night.