Descriptions1. Bluetooth Version: V2.1+EDR2. Frequency range: 2.4GHz--2.48Ghz3. Charging:0--454. Transmission distance: ?��10 M5. Operation voltage:3.6V6. File Format: Headset and hands-free format7. Channel: Mono8. Talking time: ?��2H9. Standby time: 60 hours10.Standby current: ?��1mAUsage1.Long press the Answer/end button till indicator light shows blue and begin flash2.Turn on the bluetooth device of your cellphone， and searching the bluetooth device named 8015.3.Normally it will not need pairing pass word， but if it is needed， pairing pass word is 0000.4.Answer or reject the phone calls by pressing the answer/end button， and you could also volume+/volume- by pressing the side buttons.Package Included1 x Bluetooth Mono Earphone W/MIC1 x usb cable�ꡧDO NOT INCLUDE CHARGER��?1 x User Manual