HD21 Smart Bluetooth Calling Sports Watch

Product information:

Communication type: Bluetooth
Functions: heart rate monitoring, blood pressure measurement, Bluetooth calling, smart reminder
Charging method: magnetic charging
Operation mode: touch + button
Wristband material: silicone
Color: [Dual-frequency six-star GPS positioning + motion trajectory + deep waterproofing] black, [Dual-frequency six-star GPS positioning + motion trajectory + deep waterproofing] silver, [Dual-frequency six-star GPS positioning + motion trajectory + deep waterproofing] pink
Mold type: male mold
Dial style: round