1. Keeps your head warm while you stay connected to your phone
2. Built-in a small convertible microphone
3. Hidden stereo speaker and microphone
Sync with smartphones via Bluetooth.
5. Charge via USB
Fully washable (remove the speaker from your pockets).
7. One size fits most
Bluetooth Specification: V4.2
1. Frequency range: 2.4026GHz-2.480GHz
2. Transmission distance: 10-15 metres.
3. Channel: stereo
4. Speaker parameters: 24 ohms/30 mm.
5. Speaker power: 10 mWX2
Signal to noise ratio: 102 dB.
7. Function: previous song, next song, volume plus, volume reduction, playback, pause, answer call, make call