Name: Motorcycle Helmet Headphone Bluetooth-compatible &nbsp;version: 5.0+EDR; Frequency: 2.402GHz-2.480GHz; Bluetooth-compatible &nbsp;distance: 10m~15m (depending on the surrounding environment of the device, such as obstacles); Microphone transmission distance: &lt;1m; Li-ion battery: 3.7V/1000mA; Playing time: &le;30-40 hours; Charging voltage: 5V; Charging time: 5 hours; Standby time: &le;300 hours; Power on: Press and hold the power button for 3 seconds; The device will turn on after Bluetooth-compatible pairing: 1. Press and hold the power button for 3 seconds, you will hear the voice prompt &quot;power on&quot; to turn on the phone Bluetooth-compatible , search for the Bluetooth-compatible pairing name &quot;BT31&quot; and click to select pairing, you will hear the voice Prompt &quot;connected&quot;, Bluetooth-compatible &nbsp;connection is successful; 2. Connect two mobile phones: After the mobile phone is paired with the headset, turn off the mobile phone Bluetooth-compatible . Then pair the second mobile phone with the headset, then turn on the Bluetooth-compatible of the first mobile phone and connect the two phones; 3. Automatic connection: If your mobile phone or Bluetooth-compatible &nbsp;device has a connection record with the headset, you can turn it on again to quickly and directly connect the Bluetooth-compatible &nbsp;and MT02 wireless headset without re-pairing; 4. Automatic search: When the mobile phone Bluetooth-compatible is disconnected from the headset (the voice prompt has been disconnected), it will enter the automatic search pairing mode; 5. Play/Pause: Press the power button to pause the song, press the button again to continue playing the song. 6. Press the B key twice in succession to turn on the light. 7. The battery is automatically displayed; 8. Compatible for Siri voice assistant: When connected to the compatible for iPhone, press the B button to activate the Compatible for Siri voice assistant. Compatible for Siri will automatically quit after a few seconds of stopping the conversation; Call answering to answer the phone: report the caller&#39;s phone number, then answer the call automatically or simply press the multi-function knob to answer the call; Hang up: Press the power button to hang up; Rejecting a call: Press and hold the power button for 2 seconds after an incoming call to reject the call;Packing list: 1 x Bluetooth-compatible headset 1 x back clip 1 x microphone cable 1 x USB cable 1 x instruction manual 1 x packing boxNote: Due to manual measurement, please allow 1-3 cm error, thank you Due to screen and other objective reasons, there may be a certain color difference, please understand. <div class="panel panel-info"><div class="panel-heading" style="font-weight:bold;">IMPORT: THIS ITEM IS SHIPPED FROM CHINA. PLEASE EXPECT UP TO 25 DAYS FOR DELIVERY</div></div>

Bt31 Motorcycle Helmet Headphone Waterproof 1000mah Battery Bluetooth Noise Canceling Headset with Flashlight Black