Featuring a lightweight and palm-sized design, the Optoma Pico PK120 uses an LCD light that has a life cycle of 20,000 hours. The widescreen image resolution on this DLP projector is 640x360 and the image brightness is 18 ANSI lumens. This Optoma projector has a built-in sound system with two small stereo speakers, while movies, photos, and MS Office presentations can be given without the use of a PC. A microSD card comes with the Optoma Pico PK120, which allows users to expand the memory by 32 GB. The contrast ratio on this Optoma projector is 2000:1 and the image size ranges from 5 inches to 70 inches. The video input functions are compatible with NTSC, PAL, and SDTV and the rechargeable Li-ion battery life can last for 50 minutes in standard mode and 90 minutes in economy mode. The projection distance on this DLP projector is 10 inches to 134 inches while the throw ratio is 2.2:1. This Optoma projector is 2.4 inches tall by 0.8 inches deep, by 4.6 inches wide and its total weight is 5.1 oz.