Material: plastic. Color: show as pictures. Bluetooth Version: V5.0. Audio output mode: 3.5mm. Battery: 300mAh. Working hours: 5 hours. Charging time: 2 hours. Specifications: Bluetooth 5.0, signal transfer is faster, stable and in higher quality. 2 in 1 bluetooth adapter with bluetooth receive and bluetooth transmit. Compatible with Android/IOS phone systemand all bluetooth audio devices for TV, Speaker, PC, etc. High-fidelity Stereo Sound quality debugged by professional tuner. You can enjoy TV show with your Bluetooth headphones and to avoid disturbing others. Enables your PC or laptop to wirelessly connect with bluetooth-enabled devices, like Smartphones, tablets, keyboards, mice, speakers, printers, headsets and more. Support audio equipment with audio input interface to realize wireless audio reception and transmission. Supports automatic search and connection of Bluetooth devices to realize wireless audio transmission. Built-in AEC echo cancellation and ANC noise cancellation circuits, gorgeous stereo, and more pure sound quality. Built-in enhanced signal transmission circuit, faster and more stable connection. Compatible with dual lossless audio formats,Support AUX IN/OUT. Automatic memory connection function, easier operation and more convenient connection,Built-in battery, long battery life. Smart Compatibility, Android, IOS system phones and PADs, and all Bluetooth audio devices The launch state supports the one-to-two function,Stereo supported in transmit mode. Package Included: 1 x Bluetooth Wireless Receiver Transmitter. 1 x USB Charging Cable. 1 x 3.5MM Audio Cable.