Welcome to our store! Item Type: Bluetooth 5.0 Audio Transmitter Receiver Product Material: ABS Weight: Approx. 71g / 2.5oz Bluetooth Version: 5.0 Supported Protocols: RX: A2DP, AVRCP, HFP, TX: A2DP Working Hours: RX>12H, TX>8H Battery Information: Lithium Battery 250mAh (Shipped with Built-in Battery) Charging Time: About 2 Hours Features: - RX: Easily upgrade ordinary audio systems, amplifiers, and car-mounted devices to Bluetooth-enabled devices for remote control. - TX: Upgrade TVs, computers, and projectors to Bluetooth-enabled devices for wireless Bluetooth operation with mobile phones. - 3.5mm Audio Interface: The Bluetooth 5.0 audio transmitter receiver features a 3.5mm audio interface for wider compatibility. - Plug and Play: The Bluetooth 5.0 audio adapter transmitter receiver for TV PC requires no drivers or apps. - Supported Protocols and Working Hours: Supports protocols RX: A2DP, AVRCP, HFP and TX: A2DP. Working hours: RX>12H, TX>8H. Package Includes: - 1 x Bluetooth Receiver Transmitter - 1 x Audio Cable - 1 x Charging Cable - 1 x Manual 100% Satisfaction: Our customers are our top priority. If you encounter any product issues after receiving the item, such as damage or incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory after-sales service.