1.500HB adopts fully enclosed sound cavity design
With soft and flexible earmuffs to wear comfortable
Effective physical noise reduction to reduce noise long wearing does not hurt
2.Using Bluetooth 4.1 technology, high-speed transmission
Ability to transmit high bit rate music signals to help users
Enjoy wireless high-quality audio while also building quick links
3.last number redial: in any mode, double-click MF button”to redial the last number.
4.Voice dialing: press and hold MF button”1 secound to reject the call(option)