Key Features Texas Instruments DLP Technology 400 ANSI Lumens Full HD 1080p (1920x1080) native resolution (Excellent even for very tiny text) 4K maximum input resolution Manual focus Vertical keystone adjustment +/- 40 degrees USB-C input for video and charging; no HDMI adapter required with MacBook Pro HDMI input Viewable screen size from 20 to 100 inches 2 hours battery life in Eco mode (around 1 hour in normal brightness) Two built-in 2-watt speakers; audio out jack (3.5mm) USB charging out port for charging your device while presenting Kick-stand for image adjustment Protective lens cover with on/off function Estimated Lamp Life: 20,000 hours (6+ years if used 8 hours a day) Specs: Model Number: M289 Color: Black & Gray Product Dimensions: 6.9 x 4.8 x 1.4 in Product Weight: 1.72lbs Technology: Texas Instruments DLP® Technology Light Source: LED Recommended Screen Size: 100" Suggested Environment: Brighter Rooms, Larger Groups Lumens: 400 Native Resolution: Full HD 1920x1080 (1080p) Max Input Resolution: 4k Contrast Ratio: 1000:1 Throw Ratio: 1.2 Aspect Ratio: 16:9 Focus: Manual Keystone: Auto +/- 40° Vertical Keystone Adjustment Zoom: None Audio: 2 Built-in 2-watt speakers, Audio out (3.5mm) Built in Battery: Yes IO Connections: (1x)HDMI Input, (1x)USB – C Charge/Video, Audio Out (3.5mm) MHL: No Wireless Connectivity: No I/O Connections: DC In, USB 5V/1.5A power out, USB-C Charge/Video input, 3.5mm Audio out, HDMI