LG TONE INFINIM Wireless Stereo Headset - Silver Type: Bluetooth Stereo Headset Ear Coupling: Behind the Neck Talk Time: Up to 16 hour(s) Music Time: Up to 10.5 hour(s) Standby Time: Up to 22.50 day(s) Charge Time: Less than 2 hour(s) Operating Range: 33 Feet Bluetooth Version: 4.1