The ADANAC 8000 Digital Stopwatch is easy to use and comes with an easy to understand instruction manual. It is water, dust and shock resistant and has multiple other great features. This stopwatch times 1/100th seconds and is laser tuned for 1/100th second accuracy. It can time single and split events, with split-mode. It also features time, calendar and an alarm. There are separate start-stop and reset buttons along with a light button which activates an orange backlight that lasts for five seconds at a time. This stopwatch includes a 40” black lanyard with a safety breakaway clasp. It is durable, compact and simple.