Product name: WiFi MP3 player Features: Support WiFi and Bluetooth Product model: M18 Screen material: IPS Resolution: 480*800 Operation mode: touch Bluetooth version: 5.0 Screen size: 4 inches Ebook format: TXT Recording format: MP3/WAV FM function: Supported Operating system: Android Battery capacity: 2050mAh Charging interface: type-c Input voltage: 5V1A Charging time: 2 hours Playback mode: Repeat play, single loop, full loop, breakpoint play, shake to switch songs Music playback: 24 hours (3.5MM headphones with video display) (laboratory data) Video playback: 8 hours (using 3.5MM headphones) (laboratory data) Memory expansion: Micro-SD card (Max. 256GB, FAT32 format) Music format: MP3 / WMV/FLAC/AAC/WAV/ACELP Video formats: AVI/RM/RMVB/FLV/MP4 / DAT/MKV/MPG Image format: JPG/BMP/PNG/GIF Running memory: 2GB ROM +16GB Product size: 110x52x10mm Colour:Black Material:Aluminum alloy Package Contents: 1 x music player 1 x data 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.