Specification:Type: 2 in 1 Audio Transmitter Receiver;Color: Black;Bluetooth Version: V5.0;Bluetooth Profiles: A2DP, AVRCP;Interface: Standard 3.5mm Audio Jack;Frequency Range: 2.4GHz-2.48GHz;Operating Distance: More than 33 feet (10 meters);Charging Input Voltage: DC 5V;Working Time: 4 hours;Charging Time: About 2 hours;Turn any 3.5mm media devices into a Bluetooth enabled audio device to enjoy wireless music and sounds.Features:2 in 1 bluetooth adapter with Bluetooth receiving and transmitting;Bluetooth transmitter: Add Bluetooth wireless function to your TV, PC, MP3 player, DVD player to enjoy wireless music and sounds;Bluetooth receiver: Turn any speakers, headphones, stereo system to Bluetooth enabled;Every time the device turns on, the transmitter will automatically connects to the last connected device;Bluetooth-enable all 3.5mm media devices (enable Bluetooth reception: speakers, headphones and more; enable Bluetooth transmission for: MP3, CD/DVD players, e-readers, TVs and more). Built-in 300mah battery ensures up to 8 hours of working time for portable use, fast charging via USB cable; Easy to install, plug and play, ideal for any speakers or powered devices that use a standard 3.5mm jack or AD2P bluetooth; Compatible with Android, IOS phone system and PAD and all Bluetooth audio devices for TV, speaker, PC, CD player, for iPod, for iPad, tablets, MP3 player or car stereo, etc. Noise reduction and echo cancellation; Compact design, easy to use. Package Included: 1 * 2 in 1 Transmitter Receiver; 1 * Micro USB Charging Cable; 1 * 3.5mm Audio Cable; 1 * User Manual Note: Please allow minor deviation due to manual measurement; Due to the difference between different monitors, the picture may not reflect the actual color of the item.