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Charging detection Check if the Bluetooth headset can be charged normally, take out the earphone, insert the USB cable, and find that the red indicator light of the earphone is on and the earphone is charging normally. How to connect with device? Connect the Bluetooth device for the first time, long press the ear phone power button, the red and blue lights flash alternately, turn on the Bluetooth device search and connect the Bluetooth headset. Connect the Bluetooth device again, long press the ear phone power button, the red and blue lights flash alternately, turn on the Bluetooth device, and the Bluetooth headset automatically connects to the Bluetooth device without you having to operate it again. Specification Model: Y12 Bluetooth version: v4.1 Battery capacity: 90mah Music time: 3-5hours Charging time: about 1-2hours BT distance: 10 meters Size: 71x38x6mm Functions: noise canceling, calls, music playing Compatibility: universal Playing time: about 3 hours Standby time: about 24 hours Package Include 1 * Ear Hook Bluetooth Earphone 1 * Charging Cable 1 * Headset Storage Box 1* Manual