Seiko 6R20 Manual - Page 23
Specifications - 29 jewels
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English SPECIFICATIONS 1 Features 6 hands, time display (Hour, minute and second hands), day and date display, power reserve indicator 2 Vibrations per hour 28,800 3 Loss/gain (daily rate 25 - 15 seconds at normal temperature range (between 5°C and 35°C) 4 Continuous operating time More than approx. 45 hours 5 Driving system Automatic winding type with manual winding mechanism 6 Jewels 29 jewels * The accuracy above is factory adjusted. ** Due to the characteristics of mechanical watches, any actual daily rate may not fall within the range of time accuracy specified above dependent on the conditions of use, such as the length of time during which the watch is worn on the wrist, temperature, arm movement, and whether the mainspring is wound up fully or not, etc. 23