School & Class Economy Large Stopwatch Kit (18x Basic Stopwatches)This School & Class Economy Stopwatch Kit includes 18x basic stopwatches powered by AAA batteries (no unsafe button batteries) and comes with a plastic carry case. The Economy Stopwatch is a New Basic Stopwatch with 6 Digits and 1 100 seconds for up to 30 minutes. Also has inbuilt time of day, calendar and alarm. Works on 1x AAA Battery. School Stopwatch Kit Features: 18x Economy Stopwatches 2x Plastic Carry Case 6 Digit Basic stopwatch 1 100 Sec for