Model : Acer K135Native : WVGA (854 x 480)Maximum  : UXGA (1,600 x 1200), 1080p (1,920 x 1,080)Aspect Ratio  : 16:10 (Native), 4:3, 16:9Contrast Ratio : 10000:1Brightness  : 500 ANSI Lumens LED (Standard) , 400 ANSI Lumens LED (ECO)Projection Screen Size  : 10-inch (25cm) ~ 100" (254cm)Projection Distance : 1.2' (0.4m) ~ 12.0' (3.7m)Lamp Type  : RGB LEDLamp Life  : LED life 20,000 Hours (Standard), 30,000 Hours (ECO)Ceiling Mounting Capability :  N/AAudio  : One Internal Speaker with 2 watts OutputWeight : 0.95lbs (0.43 kg)Dimensions  : 140 x 116 x 41 mm (5.5" x 4.6" x 1.6")Remote Control : IR Remote Control Digital Zoom  : N/APower Supply   : DC input 19V via a 40W power adapter (AC input 100~240V auto-switching to DC 19V)Power Consumption : 20 Watts (Operation), <0.5 Watts (Standby)Noise Level  : 33 dBA (Standard mode), 29 dBA (ECO mode)Other Features : Mobile High Definition Link (MHL) Quick Start Dynamic Black Digital Connectivity HDMI Smart Detection