Navking Route 66 NAV66. Form factor: Handheld/Fixed. Display diagonal: 109.2 mm (4.3 "). Storage media type: Flash, Internal storage capacity: 2 GB, Internal RAM: 128 MB. Processor clock speed: 533 MHz, Built-in processor: SiRFatlasV. Weight: 0.135 kg, Width: 118.3 mm, Depth: 11.6 mm