neckband bluetooth headphones coulax v4.1

Please turn off the headphones and delete cellphone pair information Then turn on the headphones to pair again If still cant pair please restart cellphone and charging headphones and then pair them again This item is Bluetooth headphones its a electric product The battery will be damaged by wrong operation please according correct measure to operation products.Powerful rechargeable battery provides up to 10 hours of continuous talking/music time with a single charge Bluetooth Headphones should be charged by DC 5V charger If item wont charge please use USB cable to charge item with USB Port Please keep the charge time over 8 hours Dont use other product charge to charging item only use USB port with DC 5V voltage to charge item.TOP QUALITY AUDIO Advanced APTX tech Hear richer and more natural sound from your phone and bluetooth device incredible deep bass sound quality About this product the Battery is 180mAh so the Charge voltage request DC 5v and charging time less 2 hours when customers charge the item please use DC 5V voltage to charge dont use the too high voltage to charge.

Neckband bluetooth headphones coulax v4.1