EXTECH® Stopwatches

Stopwatches Count, Give You the Time and Much More

Versatile Stopwatches feature calendars that display day, month and date. All are 12/24 hour switchable and have 1/100 second resolution. Each includes battery and lanyard. Choose from a wide variety of models.
Water-Resistant Digital Stopwatch Clocks, No. 99719, and No. 99720 With NIST Certificate of Traceability, count up to 23 hrs., 59 min., 59 sec.; are accurate to ±3 seconds a day and feature wake up and snooze alarm.
Humidity and Temperature Stopwatch, No. 111344, counts up to 9 hrs., 59 min., 59 sec.; is accurate to ±5 seconds a day and measures temperature, humidity and heat index. Features user-settable heat index alarm and 10-hour countdown timer.
Decimal Stopwatch Clock, No. 155751, counts up to 19 hrs., 59 min., 59 sec,; accurate to ±5 seconds a day and has 500 memory records of split lap and times. Countdown timer has three modes: countdown stop, countdown repeat, countdown then count up.
Water-Resistant Stopwatch Clock, No. 155752, counts up to 23 hrs., 59 min., 59 sec.; is accurate to ±3 seconds a day; features backlit display that turns off after 4 seconds; and has a programmable alarm and hourly chime setting. Features one second resolution from 30 min. to 24 hrs.
Please Specify No. 99720 has NIST Certificate of Traceability.