Seiko 6S37 Manual - Page 4

(2) How to use the automatic mechanical watch • This is an automatic mechanical watch with manual winding mechanism. • When the watch is worn on the wrist, the mainspring is wound automatically through normal wrist movement. • The watch can also be wound up by turning the crown. To do so, unscrew the crown by turning it counterclockwise. • To start the watch after it stops completely, wind it up either by turning the crown or swinging it from side to side until the second hand starts moving. Then, set the time and date before putting the watch on the wrist. • To wind up the watch, unscrew the crown by turning it counterclockwise, and then, turn it clockwise slowly. The watch cannot be wound by turning the crown counterclockwise. • Wind up the watch until the power reserve indicator indicates "48" on the scale. The watch is wound up fully. (Turning the crown further will not break the spring) Once the watch is wound up fully, it operates for about 50 hours. While the chronograph is used to measure a long period of time, however, the watch will stop operating before the power reserve indicator indicates "0". • If the watch is used without being wound up fully, gain or loss of the watch may result. To avoid this, wear the watch for more than 8 hours a day. If the watch is used without wearing on the wrist; if it is used on the desk like a clock, for example; be sure to wind it up fully every day at a fixed time. Power reserve indicator function: The watch indicates the duration within which the watch keeps operating. 40