Memory description： 8G = built-in 8G 16G = built-in 16G 32G = built-in 16G + 32G TF card 40G = built-in 8G + 32G TF card 64G = built-in 8G + 64G TF card 128G = built-in 16G +128G TF card Body material: Metal Display: 1.8 Inch, resolution 160 * 128 Operation key: touch Memory: built-in 8g or 16g, Tfcard expansion: the maximum support is 128gtf card expansion. Bluetooth version: 5.0. Can connect Bluetooth headset and Bluetooth speaker. Music format: ape, FLAC, AAC, MP3, WAV and other formats are supported, Equalizer: Yes, you can choose 6 music styles. Rock, funk, shiphoughton, jazz, classical, electronic. Playback mode: repeated playback and random play, all circular play. You can continue the last play. Video: support avi format video with resolution of 320 * 240. Video format needs to be converted through video converter, we can provide video converter. A-B repeat: Yes. Repeat up to 10 times. The maximum repetition interval is 10 seconds. Variable speed playback: supported. 14 levels of variable speed playback. Recording: support. Recording format wav. Radio: support. The headset needs to be plugged in as an antenna, which supports 87mhz-108mhz frequency band. It supports FM recording, automatic tuning, manual tuning and channel saving. E-book: it supports TXT format, automatic play, automatic play time, font size, background color, and player to delete e-book. You can choose the number of pages. Bookmarks are supported. Language: support 25 national languages including Russia, English, German, Italian, Japan, South Korea, Spanish, French, Greek, Czech, Danish, Hungary, Dutch, Norway, Portuguese, Poland, etc. Calendar: support Stopwatch: support Alarm clock: support Picture: support Package Contents: 1*MP3 Player 1*USB Cable 1*Instruction manual Please Note: The bluetooth of MP3 player CAN NOT pair with computers and phones! Only the above package content, other products are not included. Note: Light shooting 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.