Warmly Tips: The player supports installation of applications. But not support installation for !Use Tip: When the bottom button panel disappears, slide up on the screen and the bottom button appear. Similarly, clicking the button "V" hide the bottom button. About this item: Screen Size: 4.0 inchBattery: 1500 mAhBattery Type: lithium polymer batterySupport: WiFi and BluetoothIPS Touch ScreenBuilt-in Memory 2+16GB (TF expansion card supports up to 256GB)Charging Time: 60 MinutesStandby Time: About 500 hoursBattery life 30-40hIn screen saver state4-6 hours of videoPlay Mode: repeat play, single cycle, whole cycleMusic playback time: 30 hours (laboratory data)Video playback time: 10 hours (Lab data)Expansion slot: Micro-SD/TF cardCharging/data interface: USB-CFM Radio: supportedMusic Format: MP3, WAV, FLAC, APE, OGG, M4A, AAC, MP2, MID, ACELPVideo Format: , MKV, MPG, MPEG, RM, RMVB, VOB, MOV, , , DAT, MP4, 3GP (1080p HD video can be played directly without coding)Recording Format: MP3/WAVImage Overview: JPEG/BMP/GIF/PNGE-book Format: EPUB, , PDF, , FB2, FM Receiving Frequency: 87.5MHz ~ 108MHzCompatibility: for XP, 7, 8, 10, Vista, 2000, OS 10Material: Metalcolour: Black Package Contents: 1 x Music Player1 x USB Cable Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.