Specification:Bluetooth version:5.0Standby time:Up to 360 hoursFrequency Response: 20 Hz - 20 KHzSupport SD card slotLi-polymer battery:400MAHNormal charging time:about 3 hoursOperaing temperature:-20℃-55℃Radio Performance: Receive Sensitivity of -84dB / 0.1% BERIndicator light:Pairing: the blue light blinking fast and voice remind bluetooth mode.Connecting: the blue light is on, and blinking fast when connect successfully.Charging: the LED light red while the battery is being charged, and will switch off when the power is charged enoughCharge powerBattery: Built-in rechargeable lithium battery, DC: 3.7V Charging power: Through computer USB OR DC5V port.Charging time: Before the first usage please put to charge at least 4 hours continuously. For subsequent Charging 3 hours is sufficient for 10 hours of usage at average volume. The LED light red while the battery is being charged, and will switch off when the power is charged enough. NEVER leave it to over-charge. Usage instructionPairing the headphone with cell phone:1.Keep the Bluetooth headphone next to the cell phone within 1m, the closer the better.2.Turn on the Bluetooth headphone, the voice remind: bluetooth mode and ready for pair3．Open the"search Bluetooth" or“add new device" following the manual of cell phone, choose the Bluetooth headphone model name, pair successfullyChoose music:When listening to the bluetooth music,press “ pause” key, also press “Volume+” and “Volume-” key quickly to choose songs.Adjust volume:Long press “Volume+” and “Volume-” to adjust the volume.MP3 mode switch:Short press button”M” to switch the bluetooth mode to FM mode, and press the ON/OFF button to search radio automatically.Package content1.1 x Wireless headphone2.1 x USB charge cable3.1 x User manual
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