4in1 car charger with 1224V input, dual USB outputs (5V 1A each) and FM transmitter capabilities. This allows you to charge multiple devices while listening to music through your car radio. LED display shows realtime battery voltage and charging status, keeping you informed about your vehicle power levels. Designed to support a wide range of digital devices, including mobile phones, tablets, MP3/MP4 players, cameras, and iPods, making it a versatile accessory for all your digital needs. BT 0 technology provides lossless audio decoding and supports various audio formats, ensuring your music sounds its . Use scenarios Daily commute: charge two phones at the same time while streaming music through the FM transmitter for an enjoyable drive. Long road trips: keep tablets or cameras charged and share audio with passengers via the car stereo through the FM transmitter. Passenger entertainment: power and play music from MP3/MP4 players or iPods for shared listening without swapping adapters.