How to Use: 1. Press and hold the power button for 5 seconds to power on 2. Connect the computer with the video cable to start projection 3. After use, press and hold for 5 seconds to shut down Specification: Item Type: Projector Material: ABS Weight: Approx. 582g / 20.5oz Model: C50 Projection Technology: DLP (0.2in DMD) Display Chip: LED Lamp Life: Up to 30,000 hours ANSI Luminous Flux: 50ANSILM Contrast Ratio: 1000:1 Native Resolution: 854x480pixel, support up to 1080P Aspect Ratio: 4:3/16:9/16:10 Projection Distance: 0.3-5m / 1.0-16.4ft Projection Size: 40-120in Throw Ratio: 1.19:1 Trapezoid Correction: None Speaker: Built in, 3W Total Power Consumption: 8W Projection Mode: Front, Back, Ceiling, Back Ceiling Video Format: MPEG-2, MPEG-4, VC1, HEVC (H.265), H.264, RealMedia, AVS Audio Format: MPEG-1, MPEG-2 (Layer I /II), MP3, Digital (AC-3), AAC-LC, HE-AAC, WMA Photo: Jpeg Etc. Power Supply: AC 100-240V, 50/60Hz, DC 5V 3A Battery Capacity: 2500mAh Lithium Battery (Built In) Battery Working Time: 1.5-2 Hours Remote Control Battery: 2 x AAA Battery (Battery Not Included) Color: Silver Gray Product Size: 7.0x6.0x5.5cm / 2.8x2.4x2.2in Package List: 1 x C50 Projector 1 x Remote Control (Battery Not Included) 1 x Tripod 1 x Power Cord 1 x HD Cable 1 x Manual