2 in 1 Bluetooth 5.4 Transmitter Receiver, 3.5mm Aux Wireless Adapter for Headphones Car Home Audio Speaker, Hands-Free Call

Upgraded Bluetooth Adapter: This 3‑in‑1 audio adapter supports Bluetooth transmission (TX), reception (RX), and music playback from a TF card (up to 64 GB). In TX mode, it acts as a transmitter—sending audio to Bluetooth headphones or speakers. In RX mode, it functions as a receiver—connecting to wired speakers or car stereos to receive Bluetooth audio from your phone Advanced Bluetooth 5.4 Technology: Equipped with a cutting‑edge Bluetooth 5.4 chip, this adapter addresses the latency and connectivity issues found in older Bluetooth 5.0 versions. It delivers faster, more stable, and smarter connections while minimizing audio quality loss. Its unobstructed working range reaches up to 33 ft (approximately 10 m) Clear Audio Calls: Featuring a high‑quality built‑in microphone and upgraded CVC 8.0 noise‑cancellation technology, it filters out echoes, background noise, static, and other interference, ensuring clearer, more comfortable conversations 9‑Hour Ultra‑Long Battery Life: The Bluetooth transmitter offers up to 9 hours of battery life and can fully charge in just 35 minutes. It also supports pass‑through charging, so you can continue playback even while charging Portable Bluetooth Audio Adapter: Perfect for home stereo systems, speakers, wired headphones, in‑car audio systems, in‑flight entertainment, computers, MP3/MP4 players, and other audio streaming devices