1、4 IN 1 OUT: 4 in 1 out HD Multimedia Interface switcher supports 4 HD Multimedia Interface input sources to a single HD TV or monitor, supporting 1080p at 60Hz HD resolution. 2、FUNCTION: Enables the projector (or monitor) to display multiple HD Multimedia Interface screens, computer screens, or display multiple video images (such as cameras, DVD players, etc.) simultaneously. 3、SOUND OUTPUT SUPPORT: 4X1 HD Multimedia Interface multi viewer presents a detailed picture with colorful picture quality. Excellent sound output supports PCM2,5.1, for Dolby 5.1, DTS5.1. 4、TWO CONTROL MODES: 4X1 HD Multimedia Interface multi switcher is equipped with two control modes: infrared remote control and panel button control, making it easy to switch operations. 5、MULTIPLE SWITCHING MODES: 4 screens are displayed simultaneously, 1 main screen and 3 auxiliary screens are displayed. Double screen display. Single screen full screen display. High speed screen switching, no delay. Item Type: 4X1 HD Multimedia Interface Multi Switcher Material: Metal Model: G141BM Output: 1 x HD Multimedia Interface Sound Output: PCM2,5.1, For Dolby 5.1, DTS5.1 Bandwidth: 2.25Gbps Output Resolution: 1080P At 60Hz Product Size: Approx. 180x79.5x20mm / 7.1x3.1x0.8in Remote Control Battery: 1 x CR2025 (Not Included) 1 x 4X1 HD Multimedia Interface Multi Switcher 1 x Power Adapter 1 x Remote Control 1 x Instruction Manual