1. 1 inch OLED screen 128x64 with back clip 2. Aluminum alloy material+isolation process, electroplated integrated lenses, 3.5 earphone holes, Micro-USB 3. Support Bluetooth transmission, e-book, timed shutdown, AB reading 4. One click recording, P3 recording, PC isolated linear recording 1536Kbit, 30 hour recording time, optional voice control recording, automatic segmentation recording 5. Supports multiple playback formats: MP3, WMA, OGG, APE, FLAC, WAV, AAC-LC, ACELP Supports 28 languages, with display, continuously playing for 15 hours Model:M9 display:1.2-inch color screen Music format:MP3/WMA/WAV/APE/FLAC Bluetooth:Bluetooth 4.2 Playback time:38H EQ sound:Normal, Rock, Funk, Hiphope, Jazz, Classical, Electronica, Custom. Lyric format: E-books:/ FM radio:87.5-108MHz/76-90MHZ Recording format:WAV/MP3 Frequency range:20HZ-20KHz Signal-to-noise ratio: 90dB Headphone output:Stereo channel output language:Chinese words Battery capacity:Built-in polymer battery Memory:16G Colour:Black Material:Aluminum alloy Size:4.2x4x1.2cm Package Contents: 1 * Music Player 1 * USB Cable 1 * English instruction manual 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.