Product Description:Material: Import PC & ABS plastic alloy structure ，Shockproof Dustproof Size: 47*40*11mm Bluetooth Version: Bluetooth V3.0+EDR Bluetooth Protocol: A2DP + HFP 1.5 + HS P 1.2 Range of Frequency: 2.4GHz spectrum Ambient Noise: less than 75dB Transmitting Range: more than 10m Language Support: English， French， Spanish， Portuguese， Italian， German，Turkish， Russian Charging Time: about 1 hour Talk Time: about 3hours Music Play Time: about 5 hours Standby Time: about 120 hours Power Supply: Built-in 230mAh rechargeable battery Package List: 1 x Bluetooth Watch 1 X USB cable 1 x User Manual