Model Number: FM-30 Brand Name: AINOVO Key Specifications/Special Features: FM transmitter1. SpecificationsBand: FM frequencyQuality: hi-fi stereoFM frequency range: 88.1-107.9MHzEffective range: about 5mWorking voltage: 12V-24VUSB output voltage: DC 5V 1000mA Play all of your portable audio devices with 3.5mm jacks through your car stereo system, enjoy your music on the go. With car charger charges your device while driving, high speed charging: up to 2.4A output. Allows hands-free phone conversation through the car stereo. Features a high-contrast, easy-to-read display and easy-to-use button controls.