Features 1. Built-in Android 7.1 system, wireless WIFI Internet access. 2. Wireless connection to Android phones, iphone, IPAD, etc. 3. Built-in super battery life, strong playback for more than 2 hours. 4. Play the OFFICE document independently. 5. Support U disk plug and cast. 6. External Bluetooth speaker and cable speaker sound extension can be connected. 7. DLP display technology, the projection screen is large, and the display effect is good. Specification 1. Projection Technology: DLP 2. Native Resolution: WVGA 854*480, Maximum support resolution: 1920*1080P 3. LED Luminance: 50 ANSI Lumen 4. Projection Mode: front 5. Projection Size: 30-120 inch 6. Projection Distance: 1-5m 7. Projection Ratio: 1.19:1 (37.8 inch @ 1M) 8. Aspect Ratio: 16 : 9 9. Contrast: 2000 : 1 10. Distortion: less than 1.0% 11. Luminance Uniformity: more than 85% 12. Focus Mode: manual 13. Keystone Correction: Automatic, vertical: +- 40 degree 14. PCBA Parameters: Touch Control: yes Other Control: Button or IR2.4G wireless remote Operation System: Android 7.1.2 (OTA Upgrade) CPU Chipset: RK3128 GPU: Mali-400MP2 GPU RAM: 1GB DDR3, ROM Flash: 16GB WIFI: 2.4G 5G Bluetooth: 4.1 Built-in Speakers: 1 x 1w Video format: 1080P AVI, MP4, DAT, VOB etc. Audio format: MP3,WMA,3GP,WAV etc. Image format: jpg, png, bmp etc. 15. Interface: Mini HDMI IN, 1 x USB 2.0 IN, TF card slot, 1 x 3.5mm Audio OUT, Power: 1 x DC 5V IN. 16. Power Input: AC100-240V, 5060Hz, DC5V3A