Colourful Modern Mantel Clock in a pink silicone finish. Known as silent sweep in the industry, the hands move in a constant sweeping motion rather than a stepped tick. So you wont hear any ticking but if your hearing is particularly sensitive in a completely silent room you may hear a very quiet whirring. Specifications: Size: HWD 16.9 x 16 x 6.1cm / 6.6 x 6.3 x 2.4in. Materials: Acrylic case with a silicone finish, metal hands and glass lens. Movement: Quartz silent-sweep movement. No tick, but faint whir when in a silent room such as a bedroom. Power: Requires 1 x high quality branded alkaline AA battery (not included).