KN321 Bluetooth 5.0 Audio Transmitter Receiver — 2in1 TV & Computer Adapter Upgrade wired devices and enjoy wireless audio with a single compact adapter. The KN321 combines Bluetooth 5.0 connectivity with switchable transmitter and receiver modes so you can send or receive audio between nonBluetooth sources and Bluetooth headphones, speakers, or headsets. It solves common cable and compatibility problems and makes older audio equipment work with modern wireless devices. Key benefits Two modes in one device: use as a transmitter (TX) to send audio from a TV, computer, or CD player to Bluetooth headphones, or as a receiver (RX) to stream music from a smartphone or laptop to a nonBluetooth stereo. Bluetooth 5.0 reliability: more stable connections, better power efficiency, and improved performance compared with older Bluetooth versions. Simple way to remove cables: lets you keep using favorite wired equipment while enjoying the convenience of wireless audio. Widely compatible: designed for TVs, computers, laptops, stereos, headsets, smartphones, MP3 players, and CD players listed in the product title. Main features and attributes Model: KN321 Functionality: Switchable transmitter (TX) and receiver (RX) modes for flexible audio routing. Compatibility: Works with common consumer electronics including TVs, computers, laptops, home stereos, Bluetooth headsets, smartphones, MP3 players, and CD players. Connectivity: Bluetooth 5.0 for pairing with modern Bluetooth headphones, speakers, and other receivers or transmitters. Size and portability: Compact, pocketfriendly design that is easy to carry and install in living rooms, offices, or while traveling. Build and durability: Designed for everyday use with a practical, durable enclosure suitable for frequent handling. Performance: Stable wireless audio transmission and reception suitable for music, movies, calls, and general media playback. Practical use cases TV to Bluetooth headphones: Use KN321 in transmitter mode to send TV audio to Bluetooth headphones so latenight viewing won't disturb others. Ideal for older TVs without builtin Bluetooth. Smartphone to home stereo: Switch to receiver mode to stream playlists from a smartphone or tablet to a nonBluetooth stereo or powered speakers for richer sound. Computer audio to Bluetooth speaker or headset: Connect the KN321 to a laptop or desktop to pair with Bluetooth headsets for wireless conferencing or with portable speakers for presentations and media playback. Why customers choose KN321 Versatility: One device replaces multiple adapters by supporting both TX and RX functions. Easy integration: Connects to a variety of devices listed in the product title, making legacy equipment compatible with modern wireless accessories. Practical for daily life: Compact form factor and Bluetooth 5.0 make it a convenient accessory for home entertainment, work setups, and travel. What to expect in everyday use Quick setup with commonly used audio cables and Bluetooth pairing procedures. Consistent wireless performance for standard audio tasks across the compatible devices listed. A single, portable adapter that bridges old and audio technologies without requiring replacement of existing equipment. Specifications summary Product model: KN321 Bluetooth version: 5.0 Modes: Transmitter (TX) and Receiver (RX) Compatible devices: TV, computer, laptop, stereo, headset, smartphone, MP3 player, CD player Includes a compact KN321 Bluetooth 5.0 Audio Transmitter Receiver that lets you convert wired devices to wireless or connect Bluetooth sources to nonBluetooth systems, delivering flexible and practical audio solutions for home, office, and travel.