Description: 100% brand new and high quality Transmitter Mode: Wirelessly transmits audio from a non-Bluetooth TV, home stereo, or CD player to Bluetooth-enabled headphones/speakers/receivers. Receiver Mode: Wirelessly streams audio from Bluetooth-enabled phones, tablets, or computers to wired stereos, speakers, or headphones. Wireless noise reduction technology provides clearer sound, clearer and faster connection, a more stable signal, and faster transmission. 2-in-1 transmitter and receiver. The protocol supports A2DP, SINK/A2DP, SOURCE and simultaneously connects two Bluetooth-compatible audio devices (headphones). Perfect for watching TV; movies are perfectly synchronized. Used with devices that support APTX low latency. Specifications: Bluetooth Compatible Version: V5.0 RF power +4 decibels Bluetooth Compatible Distance: 10 meters/33 feet Frequency Response: 20-20KHz Performance Description: Charging Voltage Range: 5V Battery Charging Saturation Voltage: 4.2V When the battery is fully charged, the red light turns off and the blue light turns on, with a saturation time of about 6-8 hours Low Battery Reminder Voltage: 3.3V, red light flashes twice every three minutes to remind Power 3.0V, red light on when shutting down Static Current Shutdown: 100nA Working Current: 20-40mA Full Battery Life: 30-38 hours Standby Time: 180 days Attention: Due to manual measurement, please allow for a slight error. Make sure you don't mind before bidding. 2. Colors may vary depending on the monitor, please understand. Hello, please pay attention to your shipping address when purchasing products. If your delivery information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly Package Includes: 1 * Audio Adapter