Features: Bluetooth-compatible: MP3/MP4 music player can support bluetooth-compatible 4.0 version and also supports MP4 format for audio playback. Compatibility: bluetooth-compatible music player is for Windows XP/VISTA/for Windows 8. Voice Recorder: this music player external e-book supports voice recording function, you can use it as a recording tool. With Memory Card Function: this voice recorder has a memory card function, which can mark places that have been read and browse automatically. Portable: with built-in sound speaker is small in size, which is very suitable to carry around even when you are exercising. Specifications: Material: ABS Color: Black Size: Approx. 90.5x39.5x10 mm/3.56x1.55x0.39 inch Bluetooth-compatible: 4.0 version System Support: Replacement for Windows XP/VISTA/8 Recording Format: MP3/WAV Language: Support 9 languages Music Playback: Support MP3, WAV and other playback Recording Support: FM MIC recording, format support MP3 WAV for Image Browsing Support: BMP JPG format browsing Video Format Support: MP4 format Other Functions: document text reading support, support bluetooth-compatible receiving and sending Package Includes: 1 Piece Music Player 1 Piece Charging Cable 1 Piece User Manual note: TF card is not included. Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item.