"Smart" knit beanie with built-in wireless stereo headphone with microphone for listening to music and hands-free phone calls. 

 Made of Acrylic knit with ABS Plastic buttons and components and rechargeable battery (included). 

 Hand-wash only.

 USB to micro USB charging cable included. 

 Features easy-to-use interface and LED indicator lights.

Instructions included. 

 Approx. 6-8 hours of playback time (at 70% volume or lower).

 Charge time varies by device and environmental conditions (2 hours minimum required). Charge required prior to first use. Device can hold charge for up to a week at a time. 

 Power/Technology: Input: 5V; Work current: 160 mA; Standby current: 3mA; Transmit power: 95 dB; Sensitivity: 95 dB; Frequency response: 20-20 kHz; Transmission range: 10m (32 feet); Built-in battery type: Lithium battery. Wireless V3.0.

 Item works with most wireless enabled devices.