... lock design. It is powered by CR2016 Lithium battery. The watch comes operational.HOW IT WORKS Tap the top button on ... hence adjust them.Specifications:Electroplate steel material LED watch 28 LED lights display LED watch Display setting: Time, Date and Year Function ... -side): - Top (hour and date display + select) - Button (change mode) Watch color: Pink, red, green,gun color,blue,orange gold and ...