Laptop Mp3 Tablet Pc Headset / P9 Wireless Headphone

Type: Headphones Transmiion distance: 10m Battery capacity: 400mAh Sensitivity: 105±3db Speaker diameter: 40mm Playing time: about 10h Standby time: about 120h Charging time: about 2h Built-in microphone: YES TF Card:Support Charging port: USB Song switching: Support (short pre the function key) Volume adjustment: Support (long pre the function key) Answer the call/hang up the call: Support (short pre the function key) Audio I/O interface:Support