Features:
1) This Hi-Tech beanie allows you enjoying music while protecting from cold. Built-in microphone let you pick up calls directly. Perfect for outdoor sports like walking, jogging, running, skiing, etc;
2) Combined with excellent sound quality stereo speakers;
3) The headphones are removeable, convenient for beanie washing;
4) One size beanie fit most heads.

Specifications:
1) Beanie Material: 100% Polyester;
2) Bluetooth: BQB Certificated Bluetooth V3.0 Chip, with EDR Tech, 10M/33Ft Transmitssion Range;
3) Rated Power: RMS 10mW x 2;
4) Speaker Unit: 32Ω/30mm;
5) Frequency Response: 20HZ-20KHZ;
6) Battery: 3.7V Certificated High Quality 100mAh Rechargeable Li-ion Battery;
7) Standby Time: Over 60 Hours;
8) Play Time: Over 5 Hours;
9) Charge Time: DC 5V Approx  40 Minutes;
10) With Overcurrent, Overcharge & Overheat Circuit Protection Design on PCB.