[Ergonomic Design]: This mostrust sports stopwatch timer is ergonomically designed for your hands, you will feel comfortable and flexible when you press the button.This basic stopwatch is light weight, easy to use, special for kids training or sports match. [Countdown Function]: MOSTRUST digital stopwatch timer with 47in lanyard (neck strap) has countdown function, max countdown time up to 9 hours 59 minutes 59 seconds. [Single Split/Lap]: Times single lap and split event measure up to 9 hours 59 minutes 59 seconds. [Easy to Use]: Only Stopwatch and countdown function with 3 buttons, displays minutes, seconds & 1/100th seconds, easy to view time and record data. [On/Off with AAA Battery]: This stopwatch uses one standard AAA battery which is very easy to find and install.The simple stopwatch has on/off function with one AAA battery(Included).Hold on the ON/OFF button 5 seconds to turn it on/off 2.1 Lap/Split time Memory storage 3.Measure up to 9 hours 59 minutes 59 seconds 4.Countdown Timer Mode 6.AAA Battery (Include) 7.Easy to Use MOSTRUST digital stopwatch timer with 47in lanyard (neck strap) has countdown function, max countdown time up to 9 hours 59 minutes 59 seconds. AAA Battery Stopwatch This stopwatch uses one standard AAA battery (Included) which is very easy to find and install. Child Friendly Stopwatch with ON OFF Function The simple stopwatch has on/off function with one AAA battery.Hold on the ON/OFF button 5 seconds to turn it on/off.