Features: Model: i7 Bluetooth version: V4.1 Working range: up to 10 meters on open air Frequency: 2.4GHz Playing time: 4 hours Standby time: 100 hours - 110 hours Reception level of sensitivity: < -80dBm Rechargeable battery: 60 mAh Compatible with Apple iPhone 6/6S/7, ipad, notebook, Samsung Android, etc. Support agreement: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Impedance: 32 OHM Transmission: class2 Output power: 30mW Range: 33feet Frequency response: 20-20000Hz Charging time about 1 hour (power indicator charging: red light; full power: red light off ,blue light on) Operating voltage range: 3.0V-4.2V Mitou sensitivity: -42dB Product Size: Length 25MM* Width 15MM*High 35 MM Charging power: DC5V power supply [round hole interface] (computer USB port, mobile phone charger, car charger) Common problems: 1.NOT PAIRING: please check if the headset has entered pairing mode. (Turn the Bluetooth on and press and hold the function key until the LED light flashing Red and Blue alternately); 2.DEVICE NOT FOUND: please check if you have turned on the Bluetooth function on your devices, or please kindly try to restart your phone, the name of this earphone would be I7; 3.NOT CHARGING: kindly check if you are charging correctly, if the earphone is completely out of power, it might take longer to be fully charged; 4. VOLUME CONTROL: you need to adjust the volume on your smart phone, key button only functions power on/off/answer or reject phone calls. Package Include: 1*One earbud 1*User Manual 1*Charging Cable
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