Play your favourite music through your wired headphones, wirelessly! With the Smart Bluetooth Adapter, you can connect your wired headphones via bluetooth! After connecting your mobile phone to the Bluetooth Adapter, simply plug your headphones into the Adapter and enjoy your music without your phone getting in the way. Without the restrictions of your mobile device, activities like running on a treadmill or general exercise can become a lot easier and comfier. The Bluetooth Adapter can also be plugged into general speakers, making them easily accessible via bluetooth instead of the standard 3.5mm cables.;• Compatible with bluetooth version 4.0;• Distance Range: 10m;• Rechargeable battery: 180 mAh;• Standby time: 200 hours;• Playing time: 10 hours after full charged