The TomTom Rider Portable GPS is a handy device that quickly determines your coordinates and ensures a successful arrival at your destination. It features a convenient 3.5-inch display. This GPS navigation unit can be easily controlled via its touchscreen LCD user interface. The device measures 4.5 x 2.3 x 3.6 inches. In addition, its anti-glare screen gives you a clear view of the maps and routes.