This item is featured by its 4-in-1 multifunctions: MP3 player, MP4 player, SD Card Reader, FM Transmitter. Features: Multifunctions: MP3 player, MP4 player, SD Card Reader, FM Transmitter. Matched with a remote control. 12-24 volt wireless transmission. With 206 FM Channels. Support SD/MMC expansion card (1GB-8GB)(SD Card is not included) Without built-in memory Easy operation. Decent and fashionable design. High quality. An ideal companion in your car to let your enjoy videos, pictures, music, and FM radio more freely. Specifications: Power: Through cigarette lighter of your car Remote control battery: CR2025 button battery (1 x batery included) Color: Black Player weight: 42g Remote control weight: 14g Player screen size: 1.8" Remote control size: 81 x 40 x 7mm Package weight: 100g Package include 1 x Car MP4 Player 1 x Button Battery (built-in) 1 x Remote Control