Seiko 4R36 / 4R36A Automatic Movement with Date Function

This movement is designed by Seiko. It is an automatic mechanical mechanism that draws its energy from the wearer's movements.

This movement has a 41-hour power reserve, operates at a frequency of 41 beats per hour (bph) and uses 24 jewels.

Its display is analogue and features a date function with day of the week.