We'll provide a 24 hours online customer service for you. Please contact me if you have any questions. About charging: Charge no more than 2 hours.Connect 5V1A charger. During charging,indicator light will turn red. When the headset is fully charged, the red light will go off automatically and the blue light will be on. Technical Specification 1.Wireless Specilication:5.0 2.Wireless Profile:A2DP1.3,HFP1.2,HSP1.2,AVRCP1.6,SPP1.2 3.RF Range:10m 4.Stand-by time:about 100 hours 5.Calculating Conversation Time:about 3 hours 6.Charging time:About 1.5-2 hours Q:Why can not turn on the headset on? Make sure your device is fully charged before using it for the first time. Your device can not be turned on if battery is low. Q:There is no sound when playdack? Check the connection between your device with phone or computer, if the connection is not established,please reconnect again. And adjust the volume level to a suitable level. Q:phone or computer can not find your earphone? Confirm that your phone is in device visible mode. If it is not paired for a long time, the wireless pairing function will be automatically turned off. Please reopen wireless to "device visible mode". If the phone program error, please restart the phone. If the wireless headset error, please restart the headset, or restore the factory settings. Product include: 1 x Bluetooth Headphones 1 x USB Charging Cable 1 x User Manual 1 x Line Clamp 2 x Small Ear-Tips and 4 x Big Ear-Tips
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