Please note that this watch is mechanical watch, it worked not only by winding, but also the daily activities of wrist. You need wear it at daytime. When you do not wear it, you need wind it. Wind it one time, it could work 10~15 hours. If you put them table still for a long time, it will stop work. Just shake it, you will find that it could work again
Please wind the mechanical watch by turning the crown clockwise for 15 to 20 complete revolutions every day. Over 20 times may do harm to the watch mechanism
COMFORT: The strap is soft and comfortable and environmental friendly.