Dual-Mode Bluetooth 5.4 Hub: Seamlessly switch between transmitter (TX) and receiver (RX) modes to stream audio from TVs/computers to Bluetooth headphones, or to wired speakers from smartphones. Low-latency tech ensures perfect lip-sync for videos/gaming.All-Day Portable Power: Built-in 200mAh battery delivers 6 hours per charge via USB-C, while the ultra-lightweight 23g (0.05lb) design slips effortlessly into bags for use anywhere cars, offices, or travel.Expandable Playback & Clear Control: Insert a TF/microSD card (up to 32GB) for standalone MP3 playback, with intuitive buttons and a bright LED display showing real-time mode, battery, and connection status.Universal Compatibility: Includes a 3.5mm audio cable to upgrade cars, speakers, TVs, PCs, tablets, or gaming consoles. USB-A plug-and-play setup works with any device needing wireless audio.Complete Ready-to-Use Kit: Ships with Bluetooth adapter, charging cable, and 3.5mm audio cable simply pair with "GT69" for instant wireless audio freedom in under 10 metres.