Large Print: High contrast, large print keyboard offers increased visibility with easy to see yellow keycaps and crisp large print black letters. These high-contrast keys can really help those who have trouble seeing keyboards. Perfect for elderly, the visually impaired, schools, special needs departments and libraries, as well as companies. First Big Letter Wired Keyboard with Silent Keycap Design: Compared with other big letter wired keyboard, our keyboard uses expensive scissor keycap, low rrofile and quiet click. What's more ,keycaps designed to fit the fingertips make the typing more relaxed . Full Size: 17.3x5.8x0.78 inch with 108 Keys and number keypad which makes your typing more simple and comfortable . High Speed USB Port: Compared with normal USB port, this keyboard uses high speed USB port, it can transfer more fast . Ergonomic Design: Inclined angle, very comfortable to use it . Specification Interface: High speed USB port Keycap: Siccior structure silent keycap Operating voltage: 1.8-3.0V Working current : 2.5mA Standby current: 0.3-1.5mA Key strength: 60 1g Keyboard size : 440 * 145*26.3mm Keyboard weight: 0.60kgs Package: 1 * USB keyboard 1 * manual 1 * color box