C28 AUX Bluetooth audio transmitter and receiver – Turn any headphone into wireless Transform your favorite wired headphones into modern wireless ones with the help of the C28 Bluetooth audio adapter. This compact and practical device supports Bluetooth 5.0 technology for stable transmission and excellent sound. Bluetooth 5.0 – It offers low energy consumption and a stable connection with high transmission quality. Lossless sound – Restores the details and quality of your music, ideal for hands-free calls. Automatic pairing – Simply turn on the device, connect the phone and the adapter is automatically paired. Plug & Play – No internet connection required – simply plug and play. Built-in battery – The rechargeable lithium battery with a capacity of 140 mAh allows up to 4 hours of use with a single charge. Specifications: Model: C28 Battery capacity: 140 mAh Interface: 3.5 mm AUX Transmission speed: 100 Mbps Frequency: 2.4 MHz Transmission range: up to 10 meters Bluetooth version: 5.0 Perfect for cars, home speakers or any device with an AUX input – The C28 turns your classic audio devices into wireless ones, without complications.