1. The picture is particle-free, more high-definition, up to 16 million color high-definition screen, clearer display, more details, less noise, 480*854 pixels, visual effects are more stunning and stunning 2. The all-metal thin and thin body is rated 1+8GB large-capacity memory, and it supports the expansion of 128GB memory card, and learning courses, novels, music, high-definition movies, etc. can be downloaded 3. The body Type-C transmission interface, front and back blind plugging, sturdy and more durable 1600 mAh battery, high performance, low power consumption, and strong endurance 4. Bluetooth 5.0 wireless connection, support mobile phone Bluetooth, Bluetooth headset, Bluetooth audio, listen to music while watching e-books, pictures, videos, more powerful than ordinary MP3 functions, support to connect to Android phones, and receive Android phone file transfer simultaneously 5. Support connect to WiFi Internet, download apps, watch TV Product parameter Storage capacity 1GB storage + 8GB memory(Built-in) Screen size 4.0 inches Audio format MP3, WMA, OGG, ACC, AMR_NB, AMR_WB, FLAC, ADPCM Video format Video decoding H.264/H.2631080P@30fps, 3GP, MPEG4, RMVB, AVI, RM, MPG, MKV, WMV Picture format JPG, BMP, PNG, JPEG E-book format TXT, UMD, JAR Recording format 3GP S/N ratio greater or equal to 75db Transmission interface MICRO-USB2.0 Operating system Android 6.0 Bluetooth: 5.0 Battery specification 1600 mAh polymer battery Operating temperature/humidity 0 to 45 degrees Celsius Playing time: 2 (hours) Menu language: 24 countries Speaker: there is a speaker Additional features: support Bluetooth, picture browsing, FM radio function, recording function, external playback function, video output, intelligent operating system Colour: black Material: aluminum alloy Size: 101 x 61 x 08mm Package Contents: 1 x MP4 player 1 x USB cable 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.