The latest Bluetooth 4.2 wireless transmission support Built-in battery, approx.
Bluetooth 4.1 Wireless Stereo Bluetooth Headset Extremely lightweight design for sports, active lifestyle IPX34 is waterproof, with excellent sound quality, DSP Approximately 12 hours of operation per
Bluetooth 4.1 Wireless Stereo Bluetooth Headset Extremely lightweight design for sports, active lifestyle IPX34 waterproof design, excellent sound quality, DSP Approximately 10 hours of battery life p