Marathon CL030053BL Classic Silent Sweep Alarm Clock with Auto Night Light. Batteries Included SILENT SMOOTH SWEEP: This clock was engineered with a silent, continuous-sweep second hand quartz movement. It does not emit a ticking sound. AUTO-NIGHT LIGHT: An ambient light sensor triggers a soft glow to illuminate the dial when placed in low light. ALARM WITH SNOOZE: Easy to set alarm function with conveniently placed ON/OFF and SNOOZE buttons. DIMENSIONS: This clock is 3.5 inches wide by 3.75 inches tall and 1.5 inches thick. BATTERIES INCLUDED: Two AA batteries are included in the box.