Tenergy beanie with built in Bluetooth speakers

Product Highlights: Bluetooth Version V4.1 +EDR. Compatible with all Bluetooth devices Built in rechargeable Li-Ion battery provides up to 6 hours of playtime. (USB charging cable included) Wireless range up to 33 feet Built-in microphone allowing you to talk hands free Specification: Bluetooth version: 4.1 +EDR Frequency: 2.402 GHz ~ 2.480GHz Transmission distance: 10m (33ft) Battery: Li-Ion 3.7V 120mAh Talk time: up to 6 hours Standy time: up to 60 hours Charging time: 2.5 hours