MX777 Wireless Bluetooth Headphone Stereo Headset Headphone Earphone with FM TF Card Slot Type: Bluetooth Stereo Headset App-Enabled: Yes Noise Reduction: Yes Ear Coupling: Over the Head Talk Time: 8-10 hours Music Time: 4-6 hours Standby Time: about 120 hours Charge Time: 2-3 hours
