Features:BT4.0 technology, get a faster and more stable connection. Power consumption will be reduced, increasing battery life.The fuselage is mini, easy to carry, equipped with 3.5MM headphones, listen to music, and read e-books anytime and anywhere. Support most of the formats of the audio files MP3, FLAC, APE, WAV, etc.Built-in 8GB internal storage and enables you to download music, movies, and E-books on the device. The mp3 player comes with a TF card slot. You can also expand the storage to 128GB.Adopt zinc alloy shell, 3.5D high strength glass mirror, 1.8inch TFT color screen display, high sensitive touch key + side button control.A powerful MP3 player with slim, many helpful features with Music, E-book, FM, Voice recorder, Video, Calendar, Alarm, etc.Specification:Brand: mahdiModel: M320Material: Zinc Alloy, ABSBT Version: 4.0Power Supply: DC 5V 500mABattery: 3.7V 420mAhScreen: 1.8inch,128 * 160px TFT ScreenInput Interface: AUX/TF/USBInput: Support MP3/APE/FLAC/WAV/WMA/OGGSNR: 90dBFrequency Response Range: 20Hz-20KHzCharge Time: 1 hourVideo Play Time: 5-7 hoursMusic Play Time: 65-80 hoursBuilt-in Memory: 8GColor: Black,Silver (Optional)Item Size: approx.8.9*4.1*1cm / 3.5*1.61*0.39inPackage Size: approx. 13.5*8*3.5cm / 5.31*3.15*1.38inPackage Weight: approx. 137g / 4.83ozPackage List:1 * Music Player1 * USB Cable1 * 3.5mm Earphone1 * User Manual