Function:MP3 Player + FM Radio + Security Alarm System + wireless remoteFeatures: 100% Brand new and high quality.Used for motorcycle， scooter， motor tricycle， auto rickshaws.With USB， SD card slot.Music broadcast mode: Support SD/MMC card or USB Drive to play music.Music file format: MP3 file formatWith high sensitivity wireless remote control.Material: Metal + plastic + electronic componentsOperating voltage: 12V (10-15V / 2A)Standby current: <= 0.01AOperating frequency: 100-6KHZ (315HZ， + / - 0.5dB) Working temperature：0-60℃ Supporting Device：SD/MMC Card Supporting Format:MP3 Speaker Specifications: 125dbSpeaker size: 7.2x7.2x8.9cm， wire approximately 50cmHost Size: 9.2x6.38x2.35cm，Remote control Dimensions: 5.75x2.9x1cmWeight: 460gGross Weight: 518gPackage Size: 14.8x12.5x8cmPacking Accessories:Host X1Speaker X2X1 Remote Controlwire X1Iron bracket x2Screws