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, Glass – Colour: Black/Grey/Red/Yellow– Movement: Quartz ‘Silent Sweep’– Power: 1 x AA (not included)– Dimensions: LWH 6 x 16 x 17cm; 0.27kg