Feature: --Chinese English voice switching: The initial voice prompt language is English. When the Bluetooth-compatible is turned on but not connected, double-click the power button and hear the 'beep... beep... beep... beep...' prompt sound. The language switch is successful; --Automatically connect after pairing: If the Bluetooth-compatible&nbsp;of the last paired phone was active, it will automatically connect when the headphones are turned on again. If the headphones are disconnected from the phone during normal connection and use, and the phone exceeds the valid distance (with a voice prompt of 'disconnected'), they will automatically reconnect when they enter the valid distance; --Connect two phones: After the first phone is successfully connected, turn off the Bluetooth-compatible function. After the second phone is successfully connected, turn on the Bluetooth-compatible&nbsp;function, and the first phone connects to both phones again;Step 1 of manual pairing for the first time: In the shutdown state, press and hold the power button for 3 seconds, and the voice prompt 'Start' will flash alternately with the red and blue lights to enter; Step 2 of pairing status: Open the mobile Bluetooth-compatible , select the Bluetooth-compatible&nbsp;name 'YZ06', and click to connect. The successful connection indicator light turns blue and flashes slowly, with a voice prompt of 'connected';Description: Name: Helmet headset Bluetooth-compatible version: 5.0; Frequency range: 2.402GHz~2.480GHz; Bluetooth-compatible distance: 20-30m; Lithium battery capacity: 3.7V/450mAh; Charging voltage: 5V; Charging time: approximately 2 hours; Usage time: 10 hours; Standby time: approximately 360 hours;Packing list:&nbsp; Helmet headset x 1 Headset kit x 1 Back clip x 1 Fixing plate x 1 Screwdriver x 1 Long screw x 2 Short screw x 2 Charging cable x 1 English manual x 1 Packing box x 1Note: 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>

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