Tenergy Braided Cable Knit Wireless Hands-Free Bluetooth Beanie with Built-in Speakers - Black Type: Bluetooth Accessories Talk Time: Up to 6 hour(s) Standby Time: Up to 60 hour(s) Charge Time: 2.5 Hours Operating Range: 33 Feet Bluetooth Version: 3.0 Battery: Li-Ion 3.7V 120mAh Compatibility: Universal