Universal Steering Wheel Remote Control Learning for Car Audio Video DVD GPS Steering wheel remote control allows you to keep your hands on the wheel while controlling your navigation unit. Applies to various car electronic devices, ie: cars CD/DVD/TV/GPS/MP3 and other automotive electronic products. Simple to installation, ultra-wide control angle. Built-in high-capacity memory, 16 copy keys, enough to meet the common remote control car functions. Dimensions: 7cm x 4cm x 1.7cm ; 2.76inch x 1.57inch x 0.67inch.