automatic watch
Wrist movement powers it
An automatic watch is a mechanical timepiece that winds itself through the wearer's natural arm movements.
A weighted rotor inside spins as you move, transferring energy to the mainspring.
Unlike battery-powered quartz watches, automatics require no battery but will stop if left unworn for days.
He keeps his automatic watch on a winder when traveling.
- mechanicalOperated by machinery
- windingCurving repeatedly, sinuous
- movementChange in position
- rotorSpinning mechanical assembly
- mainspringClock's power coil
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- watch partshands, hand, dial, hour hand, minute hand
automatic watchquartz watch
Piezoelectric crystal timekeeping device
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