KN326 Bluetooth Audio receiver transmitter 5.0 two-in-one Bluetooth adapter for hands-free calls 1. Technology: BT5.0, A2DP, AVRCP (receiver mode only) 2. Operating range: Max. 10 m 33 ft (without any blocking object), pairing name: KN326 3. Charging time: 2 hours; Battery type: Lithium polymer (200mAh) 4. Size: 44×44×12mm, weight: 18 grams 5. This portable, lightweight wireless audio transmitter and receiver is the ideal wireless audio solution for all situations and USES 6. Transmitter mode: Wirelessly transmits audio from a non-Bluetooth TV, home stereo system, or CD player to a Bluetooth headset or speaker 7. Receiver mode: Wireless transmission of audio from bluetooth-enabled cell phones, tablets or computers to wired stereos, speakers or headphones 8. Switch between transmitter and receiver mode with the flick of a switch. Easy connection using advanced Bluetooth technology and 3.5mm audio cable (included). 9. The Ultra-portable KN326 audio stream power supply is only 44mm (1.73 inches) and weighs only 18 grams (0.63 inches), but has powerful wireless audio streaming capabilities. Place the transmitter and receiver in your backpack or laptop bag and carry it with you without any effort. 10. Wide compatibility: Equipped with 3.5mm cable and 3.5mm to 2RCA cable, this receiver transmitter adapter can be widely used in your computer, laptop, home stereo system, headset, smartphone, Mp3 player, CD player, etc. 11. Power on: Press and hold the power onoff button until the LED lights up; Power off: press and hold the power onoff button until the LED goes out Charging: Use the DC-5V charger and micro USB charging cable. The red light comes on when the battery is charging. When the battery is fully charged, the red light goes out and the blue light comes on. 13. Switching mode: 1)RX: receiving mode, indicator light: blue LED 2)TX: transmitting mode, indicator light: red LED 14.RX mode: Pairing name: KN326. Find KN326 pairing in the Bluetooth setting of the mobile phone. The blue light flashes twice per second durin