Features: 1) Fashionable and innovative design, you can enjoy Hi-Fi music in the car or boat 2) Adopted frequency phase lock loop technology and 3D sound coding technology, can read MP3/WMA files on the USB removable disk directly 3) Supports Hi-Fi effects of MP3, MD, CD and TV file playback 4) Draws power from cigarette lighter jack in the car (car 12V DC power) 5) Audio input and output 6) Resumes playback from the last frequency and track number even if it is restarted 7) Surface with nanometer technology 8) Colors: silver, pearl white 9) Dimensions: 10.6 x 4.2 x 2.9cm Specifications: 1) Voltage: 12V DC 2) Operating current: 3) FM frequency: 7 FM channels (87.7, 87.9, 88.1, 88.3, 88.5, 88.7, 88.9MHz) 4) Channel switch: press the \'\'CH\'\' key to switch preset channel 5) Audio source: USB flash disk or MP3 player 6) Transmitting distance: up to 30 meters Instructions: 1) Plug the unit into cigarette lighter of your car directly 2) Plug USB flash dick into car MP3 transmitter through U disk jack 3) Press the CH button to select one from 7 FM channels that do not interfere with local broadcasting stations 4) Tune the frequency of your car\'\'s stereo to the same as the unit 5) Press the play button on the FM modulator to enjoy your music Inner packing: 1pc/plastic box (clamshell with insert card) or 1pc/gift box (white/color box) N.W.: 30g G.W.: 108.5g (plastic box), 196.5g (gift box) Outer packing: 60pcs/ctn (plastic box), 50pcs/ctn (gift box) Carton dimensions: 55 x 36.8 x 46.5cm G.W.: 7.62kg (plastic box), 10.67kg (gift box)