Wireless Audio Transmission: This 2-in-1 wireless adapter supports automatic search and connection of Bluetooth devices for wireless audio transmission. Supports audio equipment with audio input interfaces for wireless audio reception and transmission. Pure Sound Quality: This Bluetooth 5.0 transmitter/receiver features built-in AEC noise reduction and ANC noise reduction circuits, delivering superb stereo sound and clearer audio quality. Built-in enhanced signal transmission circuit ensures fast and stable connection. Smart Compatibility: This 3.5mm wireless transmitter is compatible with dual lossless audio formats. Smart compatibility with Android, iOS smartphones, and tablets, as well as all Bluetooth audio devices. Supports extra input/output. Easy and Convenient Use: This 2-in-1 Bluetooth adapter is easy to connect, requiring no complicated drivers or download applications. Automatic memory connection function simplifies operation and connection. 2-in-1 Wireless Adapter: This 3.5mm 2-in-1 wireless adapter supports one-to-two functionality in activated mode and supports stereo in transmission mode. Built-in battery with long battery life. Specifications: Item Type: Bluetooth Adapter Material: ABS Bluetooth Version: 5.0 Charging: DC 5V Built-in Lithium Battery: 300mAh Working Time: 6 hours Charging Time: 2 hours Output: 3.5mm audio output Package Includes: 1 x Bluetooth Adapter 1 x Audio Cable 1 x Charging Cable 1 x Manual