1 The first time you use the watch， please turn button clockwise 20-25 times， then shake the watch， the watch starts. Please do not turn the button counter-clockwise twist， or spring damaged.

2 Regulation time， pull out the button ， and then turn clockwise to adjust to the specified time， and Press the button and then back into place.

3 Always wear a watch or Every morning， evening turn clockwise the button 20-25 times to ensure continued momentum chronograph watches.

4 There is a reasonable travel time mechanical error range， you need more than a day or winding movement，

if high accuracy requirements on time buyer， please be careful to buy.