Specification: Model: C22 Color: Black Bluetooth-compatible: 5.1 Material: ABS Endurance: 10h Battery capacity: 180mAh Transmission distance: 10m Suitable for: computer, TV, projector (transmission mode)/car, speaker, headphones (reception mode)/TF card mode Gross weight: 42g Product size: approximately 60 * 40 * 13mm/2.36 * 1.57 * 0.51in Packaging size: approximately 103 * 68 * 18mm/4.06 * 2.68 * 0.71in Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Wireless Transmitter Receiver 1 x Type-C Charging Cable 1 x Instruction Manual 1. Dual Function: This receiver can switch between RX (receiver) and TX (transmitter) modes, allowing you to use it with a variety of devices. It is compatible with car audio systems, TVs, computers, and more. 2. TF Card Play: This receiver supports TF card play, making it easy to swap out cards on-the-go and providing you with even more options for your audio entertainment. 3. Clear Sound Quality: This adapter uses high-definition audio decoding technology to reduce signal loss and background noise. The result is clear sound quality that allows you to enjoy every detail of your music. 4. Bluetooth-compatible 5.1: Equipped with a high-performance Bluetooth-compatible chip and a ceramic antenna, this transmitter receiver provides stable and low-latency connectivity up to 10 meters away, ensuring smooth and seamless audio transmission.