Seiko Epson AS32

AS32, documented as AS32A, is an Epson solar-powered analog quartz movement with central hours, minutes and seconds and a quick-setting date calendar. The movement is 4.21 mm high without its solar cell and 4.61 mm including the solar cell. Outside diameter is 23.70 mm with 22.00 × 22.60 mm flats. Expected running time is approximately four months after a full charge. The dial must transmit more than 30% of the light to the solar cell. The oscillator frequency is 32,768 Hz and rated accuracy is ±20 seconds per month.