S370 Binaural Sport Wireless Bluetooth 4.1 Headset Stereo Music Headphone Earphone with Mic Type: Bluetooth Headset Noise Reduction: Yes Ear Coupling: In the Ear Talk Time: Up to 5 hour(s) Music Time: Up to 4 hour(s) Standby Time: about 120 hours Charge Time: 2-3 hours Operating Range: about 10 meters