There's something about the design consideration given to original remote controls that isn't always replicated with universal units. With this replacement unit, it closely replicates all the original functionality and is a drop-in replacement. No setup required, just insert your batteries and you're ready to go. Note: some buttons on the remote may cover features not available on your particular TV, such as record / playback. Features: 100% compatibility guarantee for Sony TVs Zero setup required Full function Product Specifications: Width : 50.0mm Height : 223.0mm Depth : 22.0mm Disposable battery required to power : Remote Control Battery type : AAA Battery Quantity : 2.0pc Are batteries included : false Batteries can be replaced : true Battery compartment location : Back How is battery.