Pocket chronometer movement with dial, hands and glass. It has a half-plate fusee movement, signed and numbered, with a spring-detent escapement and compensation balance, free-sprung, with flat spiral balance spring. The movement is inscribed, "No. 5013 / Change Alley / London / Parkinson & Frodsham". The watch has a white enamel dial with Roman numerals and spade and poker hands. The subsidiary seconds dial is below centre and the up-and-down (state of wind) indicator is above.