Product parameters: Display size: 4.0 inches Storage capacity flash memory: 8GB-16GB Expansion card: support MICROSD (TF) card Operating system: Android system Video format: full format Music format: full format Headphone interface: 3.5mm Product size:106*62*10mm Battery capacity:1500mAh External amplification:BOX speaker Bluetooth-compatible:Support Bluetooth-compatible 5.0 Feature: - Full capacitive touch screen, with 4.0-inch IPS large screen, smooth touch experience - Support MP4/AMV and other formats playback, eye protection large screen, video playback more clear - Immersive music experience, support APE, WAV, FLAC and other lossless formats, can synchronize the lyrics - Bluetooth-compatible 5.0, Bluetooth-compatible headphones, Bluetooth-compatible stereo and other Bluetooth-compatible audio devices can be connected, more stable connection, better sound quality - Multifunctional e-book, full-screen reading, four kinds of use functions only to give you a better reading experience - Player expandable memory, large-capacity storage for a variety of needs at your fingertips, access to PC-like storage space, easy to deal with large files - 4.0-inch high-resolution display, photo display larger and clearer support for most picture formats such as JPG, JPEG, BMP, GIF Package Contents: as shown in the picture