Known as silent sweep in the industry, the hands move in a constant sweeping motion rather than a stepped tick. So you won’t hear any ticking but if your hearing is particularly sensitive in a completely silent room you may hear a very quiet whirring. Features & Specifications: – Material: Acrylic, Metal Hands, Glass– Colour: Black w/ White– Movement: Quartz– Power: 1 x AA (not included)– Dimensions: LWH 7.5 x 28 x 13.5cm; 0.63kg