Advantages: 1.High Brightness 7100 lumens and high contrast radio 100,000/1 2.Very small and portable (Like A4 paper size) 3.Hybrid Light Source (LED Laser)/Pure Solid, brightness assurance 4.Real 3D function can let you enjoy more fun 5.The projector brightness can be adjusted according to your usage 6.Wireless screen mirroring function for your ISO system and android system smart phone,buit in 4.4 android system and 4.0 bluetooth Specification: Native Resolution 1280x800 ,Support 1080I ,1080P Display Technology DLP Contrast 100,000:1 Light Source Hybrid Light Source (LED Laser)/Pure Solid Light Source Lifetime 50,000Hours (at Standard Mode) Brightness(Max) 7100 lumens Light uniformity 90% Andriod Operating system Android 4.4 Bluetooth Built in 4.0 CPU Quad-core,ARM Cortex A7,1.5GHz Frequency GPU Mail-450MP2 TF card Support up to 64GB capacity ,support format FAT,FAT16,FAT32,NTFS; Wifi 802.11a/b/g/n (Dual-frequency technology) Flash 8GB Patent Optical Engine Full Sealed & Dustproof Optical Engine Material All-alloy (3D Printing Precision Optical Engine) Projection Lens Optical Zoom 1.0~1.3 Throw Ratio 1.9~2.3 Native 3D Shutter 3D Projection Ways Front / Desk /Rear/ Ceiling Mounted Screen Size/ Projection Distance 50-250 inch / 1.5m -15m Unit Size(LxWxH) 250*170*52mm (Excluding feet) Universal Battery System The Projector Can be Battery Powered (Like Mobile Power) Support Language 23 types Qualified by FCC,CE,ROHS,CCC Screen Mode 16:10(Default) /4:3/16:9 Screen length:16:9 Diagonal Distance between Projector and Screen(Min&Max) 50inch 2.48m/2.05 m 60inch 3.04m/2.53 m 70inch 3.47m/2.87 m 80inch 4.04m/3.35 m 90inch 4.46m/3.70 m 100inch 5.03m/4.176 m 110inch 5.45m/4.52 m 120inch 6.02m/5 m 250inch 11.45m/12m