SPER SCIENTIFIC® Large-Display Water-Resistant Stopwatch, NIST Certified

Large-Display Water-Resistant Stopwatch Guarantees Accuracy

Easy-to-read Large Display Stopwatch offers a 5/8"H display. Counts by 1/100 second for the first 40 min., then by the second up to 24 hours. Features include lap function, alarm clock and calendar. Measures 2-7/8" x 3-1/4" x 3/4". Weighs 2.4 oz. Includes a 1.5V button-cell battery and NIST-Traceable Certificate of Compliance.
Compliance: ISO/IEC 17025.