Description: 3.5mm stereo input jack Sleep mode, energy saving Instructions: If this is the first time you use this device, please pair the device first: To enter pairing mode, press and hold the ON/ OFF button for 5 seconds until both red and blue LEDs flash. The devices should now recognize each other and pair. The LED on the music receiver will slowly flash blue after successfully pairing. To complete pairing some devices require a pass key or code, please enter "0000". Once successfully paired, the devices can be power off. To re-connect simply power them both on,no need to pair again If you have already matched before: Press and hold the ON/OFF button for 3 seconds until the blue LED light begins flashing. To turn off, press and hold the ON/ OFF button for 5 seconds. The red LED will light up, and then turn off. Interface: Audio 3.5 Whether plug and play: plug and play External power supply: no external power supply Transmission rate: 300 (Mbps) Effective working radius: 10 (m) Bluetooth standard: 3.0 Operating frequency: 0.5 (MHz) Support for Bluetooth handsfree calls Support Bluetooth A2DP stereo Frequency: 2.4GHz Power: Use a mini USB cable to charge Working hours: up to 8 hours Specifications: 3.5mm stereo input jack Sleep mode, energy saving 10 (m) Effective working radius 0.5 (MHz) Operating frequency Support for Bluetooth handsfree calls Support Bluetooth A2DP stereo Package Included: 1 x Bluetooth Receiver