Communication standard/data transmission: Bluetooth
Heart rate: HR3605
Step counting (G-Sensor): Silan Micro SC7A20
Charging method: 2PIN magnetic wire, with a spacing of 7.6mm
Battery: Actual capacity 400mAh, V3.7 standard voltage
Waterproof rating IP67
Android phone: Supports original operating system versions 6.0 and above (Settings - About device, check Android version).
Apple phone: Supports system versions 9.0 and above. You can check the version through phone settings ->General ->About this phone. If the version is lower than 9.0, please upgrade first.