Et30w with battery specification
image unit: 4.3" lcd
brightness: 3300 lumens
native resolution: 1920x1080dpi
contrast: 2000:1
keystone: ± 50° digital correction
speaker: built-in 4ω/3w *2 speaker
aspect ratio: 4:3/16:9
projection size: about 30-120 inches
projection distance: about 1m-3.8m
input: usb*1, hdmi*1, dc 19v in*1, av*1
power consumption: 55w
lens lifetime: led lamp,50000 hours
product dimensions: 137*107*146(mm)
product weight: 1.5kg
input voltage: ac100-240v,50/60hz