ROKR mechanical gears clock with a beautiful owl shape and battery movement. It has a wind-up pendulum with a wind-up timer. When the time is up, the timer bell will ring! We have offered you everything you need to build this mechanical gears 3D wooden puzzle kit. Have fun assembling your own clock!

BATTERY CLOCK: A real clock driven by accurate quartz battery movement. 
BELL TIMER: A timer is driven by a spring and will ring when time is up (max: 30mins).
REAL PENDULUM: A spring-driven pendulum with precise anchor escapement.
Size: 206x128x265 mm (8.11*5.04*10.43 in)
Pieces: 161pcs
Energy Source: Battery/Windup
Assembly Time: 4 hours
If you assemble the product correctly and use the wax inside to reduce the friction between the wood board properly, the clock will run for 1-3 hours.