mart touch panel, precise touch, sensitive and not stuck. Using DLP display technology, 4K HD decoding Support vertical keystone correction +-45 degrees, even if the projector is placed obliquely, it can also ensure that it can get a square picture Supports high-definition input, connects to the computer through the HD-IN interface, and realizes the synchronization of the projection screen and the computer screen Support Bluetooth version 4.1. Equipped with infrared remote control, making entertainment and work easier Projection Technology: DLP 0.3 inch DMD Display Chip : RGB LED OSRAM Q6 Light Luminance: 50 ANSI Lumens Standard Resolution: FHD Projection Distance: 1-5m Projection Area: 30-120 inch Keystone CorrectionManual, Vertical: ±40 degree Light Life: Up to 30,000 hours Contrast1000: 01:00 Throw Ratio: 1.19:1 (Distance/Width) Distortion: <1.0％ Luminance Uniformity: >85% Built-in Battery: 4000MA Usage timework : for about 2 hours OS: Android 9.0 CPU: S905X,Quad core ARM Cortex-A53 CPU up to 1,5GHz GPU: ARM Mali-450 GPU RAM: 1G /2G ROM8: 8GB WIFI: 2.4G/5G Wifi