Huawei Band 4 User Guide - Page 6

Getting started • Before charging, make sure that the charging port and metal parts are clean and dry to prevent short circuiting or any other risks. • If the band screen flickers or goes black, connect it to a power source to restart the band. • Use a Huawei charger with a rated output voltage of 5 V and a rated output current of 1 A or above or a computer to charge your band. Using a non-Huawei charger may be slower and could cause your band to heat up. Exercise caution when using a nonHuawei charger. Please purchase an original Huawei charger from an official Huawei retail channel. Charging time: It takes about 100 minutes to fully charge your band with a 25°C room temperature. Once the battery icon is full, your band is fully charged. To ensure battery safety, the charging current will be decreased substantially when the ambient temperature is too low. This means it will need longer to charge. It is recommended that you charge your band in an environment with an ambient temperature higher than 20°C. Checking the battery level: • If the screen is on, just tap the screen to check the battery. • Alternatively go to More > Battery to check it. • You can also open the Huawei Health app on the connected phone and touch Devices to see the battery level. Battery level is displayed as a whole number percentage. Low battery alert If the battery level is lower than 10%, your band will vibrate, and the band screen will display to remind you to charge your band as soon as possible. Icons Preinstalled watch faces: 5