C28 Bluetooth Transmitter Receiver, 3.5mm Aux Audio Adapter for Car, Plane2-in-1 Bluetooth 5.0, Hands-free Call with Car Stereo, TV, Speaker, Headphones, MP3 Player. Detachable 3.5mm Plug.

• Instant plug-and-play — no app, no menus, no pairing codes: Plug the C28 into any 3.5mm aux jack and it pairs with your AirPods, JBL, Bose, or Sony headphones in seconds. One button switches between transmitter mode (send audio out) and receiver mode (bring audio in). Nothing to configure — ever.
• Brings Bluetooth to any device made before wireless — instantly: Works with vintage stereos, Victrola & turntable record players, older TVs without Bluetooth, classic car aux inputs (pre-2015 vehicles), CD players, gym treadmills, projectors, and airplane seats. If it has a 3.5mm headphone or aux jack, C28 makes it wireless — no technician, no adapter tangle.
• Up to 6 hours per charge — built for daily commutes and short trips: Fully recharges in 2 hours via the included USB cable. Perfect for a daily car ride, gym session, or an evening at home. For longer journeys, charge it overnight or keep a power bank handy — it charges while it works via USB. Battery level shows on the red/blue LED indicator.