Firstsing Sport Stereo Noise Canceling Waterproof IPX4 Wireless Bluetooth Headset for IOS Android

Bluetooth:V4.1
Chip:CSR8635
Battery:80mAh
Frequency Range:2.401GHZ～2.482GHZ
Operation:Class 2
Mode:headset/handfree/A2DP/AVRCP
Operating range:up to 30 feet (10 metres)
MP3 Playing Time:6-7 hours
Standby Time:100 hours
Charging Time:2-3 hours
Compatible with iphone and android smartphone.
Multi-points: can connect to two devices at the same time.
Show battery level on IOS smartphone
IPX4 waterproof, you can do exercise and don't worry about the sweat and rain.
CVC6.0 noise canceling function. Have s clear sound.