Android System:Android 5.1 Display Technology:DLP Build-in Battery:N.A Bulid- in Speaker:yes (2W*2) Miracast /Airplay:Yes Products Dimension: 19.2 x 14 x 5.8cm 7.56 x 5.51 x 2.28inches Projector Net Weight:0.69kg Brightness:700ANSI Lumens Resolution:Native 1280 x 800,4K,2205P Support Contrast:20000:1 Projection Distance:0.25-5Meters Projection Image Size:10-350nches Aspect Ratio:16:9 /16:10 Lamp:LED Lamp life:more than 50000hours Focus Mode:Manual Build-in memory:1G/16G WIFI:Dual 2.4G/5.8G WIFI Bluetooth:Bluetooth 4.0 tripod hole:YES (at the bottom) With Touch PanelYES(Glass touch panel) With Front StandN.A Keystone Correction:Auto Correction (vertical ±40 degrees) Certificate:CE/FCC Interface / Input :VGA*1;SPDIF*1;AV*1; 3.5mm Audio Output*1;); USB*2 (USB2.0+USB 3.0);TF Card*1;HDMI*2(MHL*1) Color:Silver, Black,Customized Single Unit Package: 2.5kgs /30*28.5*7.5cm Certificate:CE,rosh Warranty:1 year