One of the most beautiful UGears models. Timer is an exquisite mechanical device which can be set for any time ranging from 1 to 20 minutes. Wind up the alarm mechanism and the alarm will go off when time runs out. The Timer has unique roller pendulum and amplitude adjustment system on the back wall. As the other Ugears models, Timer is powered by plain office rubber bands. We have improved this model several times to achieve perfect results, so anyone could assemble this amazing clockwork mechanism to add a bit of vintage romance to a work desks, living room or wherever it pleases you heart.