BOYI BY306 AUX Car FM Transmitter Wireless Bluetooth 5.3 Receiver Features: 1. Transparent punk style, enhances visual experience, outstanding design, and unique experience. 2. It can receive and transmit signals in one, switch freely, and is suitable for a variety of devices. (Note: Only one of the two functions can be used when receiving and transmitting) 3. The car audio system changes to Bluetooth audio system in seconds, starts with the car, and automatically reconnects. You can enjoy mobile music, audiobooks, and high-definition voice navigation broadcasts, making driving safer. 4. Built-in microphone, hands-free amplification, clear calls, hands on the steering wheel, and safer driving. 5. Made of high-rebound TPU rubber material, it is designed for wall-mounted TVs, wall-mounted speakers, etc., and is considerately designed for narrow environments. It is soft and resistant to bending, and can be used for a longer time. 6. Supports AACSBC high-definition audio decoding, reduces sound loss and background noise of wireless transmission, and has clear sound quality without noise, restores sound details, and enjoys beautiful music. 7. Equipped with high-performance Bluetooth 5.3 chip, stable and low latency, and built-in ceramic antenna, enhanced transmission signal, more stable and smooth connection, supporting 10 meters long-distance transmission. Parameters: 1. Battery capacity: 145mAh 2. Material: ABS+PC 3. Size: 92x20x12mm 4. Weight: 12g