PRODUCT SPECIFICATIONS Enclosure • Lightweight, compact, card format • Dimensions: 4.0” L x 2.5” W x 0.75” H • Weight: 2.0 oz (with batteries) • Angled LCD screen for optimum viewing • Durable, rugged case ensures maximum longevity under extreme conditions User Input • 20 Key (1(A) - 10(J)), Answer Mode, Go To, Enter, Yes, No, Menu, Select, Clear, +/-, .