Built-in Android 9.0 system, you can watch Netflix and YouTube online, and easily enjoy the handheld cinema. Built-in battery, fully charged can play movies continuously for more than 1.5-2 hours. Built-in Bluetooth speaker mode, enjoy the feast of hearing. New DLP technology, more advanced than ordinary LCD, the picture quality can reach 1080P ultra-high-definition and high-brightness. Specifications: Display Technology: DLP Display chip size: 0.20“ DMD Display resolution: 854x480P Support Resolution: 4K Light Source: LED(RGB) Brightness uniformity: 90% Contrast ratio: 1000:1 LED useful life: 10,000h Throw ratio: 1.2:1（31 inchat1M） Projection size: 40-300 inch Projection distance: 0.5-8m Screen ratio: 16:9/16:10/4:3 Keystone correction: Automatic horizontal keystone correction, manual vertical ±40° keystone correction Focus mode: Manual focus CPU clock speed: Quad-core Cortex-A7 1.2GHz ROM: 16GB RAM: 2GB DDR3 Operating system: Android 9.0 Support Video Format: 4K VP9 and 4K 10bits 1080P AVI（H.264, DIVX, DIVX, XVID, rm, WMV, MOV, MP4（H.264, MPEG, DIVX, XVID), DAT（VCD), VOB（DVD), MPEG, MPG, FLV（H.263, H.264), ASF, TS, TP, 3GP, MPG Support Audio Format: MP3/WMA/AAC/WAV/OGG/DDP/HD/FLAC/APE Support Image Format: HD JPEG/BMP/GIF/PNG/TIFF Support Flash: Supports EMMC Port: USBx1, Earphone x1, HDMI-compatible x1, DC IN x1 USB/TF card support: Maximum 32GB Bluetooth: Bluetooth 4.2 Wi-Fi: 2.4G/5G Wi-Fi Built-in speaker: 3W*1 Remote Support: IR and 2.4G wireless remote Color gamut: 120% NTSC Maximum power: 24W Battery rated capacity: 3.7V 7000mAh Power supply: AC 100-240V 50/60Hz Power input: DC 12V/2A Dimensions: 72mmx72mmx106mm Net weight: 400g