1. English31.1 pairing and connecting1.2 Control buttons and indicators1.3 Battery and chargingPlease read this user manual before using this product. For more information, pleasevisit www.noontec.comThis product is built in chargeable lithium battery which can power the headphone for 35hours as long as it isfully charged. Charging mode of headphone: it is charged by micro USB interface with the charging voltage of5V. It generally takes 2hr to fully charge it. The headphone has four charging indicators with each onerepresenting 25% electric volume. Press twice to display the rest electric volume. Note: If the electricvolume is too low, the headphone will emit a beep to remind the user to charge it.1. Enable the Bluetooth of the music player and turn on the power of this Headphone;2. From Bluetooth device list of the music player, select “ZORO II wireless” to pair;3. If your player requires password, please input 0000 and click OK for connection. Some devices may requirethe user to accept the connection.4. If restarting this device after powering off, it will connect the player automatically.1.4 Technical parametersType: Closed-back Dynamic Sensitivity: 108dB (at 1kHz 1mW)impendence: 32Ω rated power: 30mWthe maximum power: 60mW Frequency response: 13-26KHzweight: 210g mode of wireless transmission: Bluetooth 4.0 with NFCsupporting apt-X technology transmission distance: 10m in maximumUser ManualLong press for 3s to power on/long press for 3s to power off with tone notice at thesame time.Press it once to play music and press it once again to suspend playing music.Press it once to answer/refuse the call.Press it twice to display the electric volume of battery.Short press it to volume up.Long press it to previous song.Short press it to volume down.Long press it to the next song.Status Indicator;flashing: Searching for Bluetooth deviceOn: Bluetooth connection succeededCharging indicators;flashing: being chargedon: charging finished.Charging interfaceMicro USB interfaceAudio input interface under wire working modeInterface of audio cableNFC sensing regionNFC