Teachables Stopwatches - Set of 30 & TrayThe 30 Stop Watches & Tray kit includes 30 high quality, hand held stopwatches, each featuring accurate timing to 1 100 of a second. These stopwatches are designed for easy use with thumb and forefinger control and offer multiple functions, including split lap time, 12 and 24 hour time, alarm, and date functions. They are also water resistant and come with a handy wrist neck strap for convenience. This kit is ideal for classroom use, especially in