The C900 features a simple slider design, with a full keypad of large half-inch sized buttons that slides out when you need to dial a number. When fully closed, the C900 measures only 4 and a half inches in length. With a thickness of only one inch, the C900 will fit comfortably in your pocket or purse. The C900 weighs 5.4 ounces, which is about the same as a bar of household soap.