-Adopted professional switch design (minute switch) press with light touching, -Sensitive hand feeling, strong & durable -10/30/60/80Lap and Split Memory With 1/100sec. Precision*Fastest & Slowest Lap Calculation -Countdown Timer*Pacer*Calendar Time (12/24 hr format)*Battery Life Indicator - Memory Full Indicator Triple Line Display *Water-resistance Structure *Shock-resistance Structure -3.0V Lithium Battery