Optimal Shop 4 Port Input 1 Output Audio Video AV RCA Switch 4 ways Selector Splitter Box Brand new & High quality.Suitable for family, hotel, karaoke, shopping, school, factory, etc... Used by high quality components and advanced circuit design technology Isolation, the output signal is not distorted, do not disturb each other. Applicable to DVD / VCD / VCR, TV special kind of game players.Convenient switch on top of the developing AV Multi-Selector. Channel 4 AV input to 1 AV output . Connects 4 video devices to 1 TV set.Compatible with AV devices. Supports resolution of 1024 x 768 @ 85 Hz.Works with standard AV (yellow-red-white) connector.Size: 13.6cm x 10cm x 3.8cm.