Sweat and splash proof can let you enjoy outdoors activities. CVC intelligent noise reduction to provide high quality music.Music play time is about 4 hours. Talking time is about 6 hours, enhance greatly the time of use.Can display bluetooth power on your IOS device.Support multi-point connection.Bluetooth version: V4.1.Bluetooth protocol: HFP/HSP/A2DP/AVRCP/CVC.Workable distance: 10m (barrier-free space).Charging hours: 0.5- 1 hour.Charging voltage: DC 5VSensitivity: 110dB + / - 3dB