Counts up or down to 10 hours with two 1/100th second displays. Ideal for multiple and simultaneous processes. In stopwatch mode current lap time shown in upper display, cumulative total in lower one. Memory stores last 60 lap times so there is no need to look away from a test to make notes. It shows fastest, slowest, and average lap times, alarm clock function. In timer mode upper display shows original setting while lower one counts down. Countdown cycles repeat upon completion. 30 second shuttle timer for use during timeouts. Lap counter shows number of laps (up to 99) in stopwatch mode and number of cycles repeated in timer mode. Pacesetter function can be set to beep continually from 10 beeps per minute to 320 beeps per minute. Shock resistant, superb hand grip. Water-resistant. N.I.S.T. traceable Certification Report available. Dimensions: 3¾" x 2¼" x ¾"Weight: 2.3 oz *Certification Option N.I.S.T. traceable Certificate of Compliance is available at an additional cost (select option above). Downloads Instruction Manual Product Brochure Comparison Chart Sper Scientific Stopwatch Comparison Model 810012 810022 810029R 810033 810035A 810036A 810048 Description Water Resistant Stopwatch Large Display Stopwatch Countdown Stopwatch Large Display Water Resistant Stopwatch Decimal Display Stopwatch 100 Memory Water Resistant Stopwatch Advanced Decimal Display Stopwatch Digit Height (mm) 7 8 5 5 12 5 4 Cord Length (in) 23.5 26 25 24 22 23 23 Timing Range 24 Hours 24 Hours 10 Hours 10 Hours 20 Hours 24 Hours 20 Hours Resolution 1/100 Sec 1/100 Sec 1/100 Sec 1/100 Sec 1/100 Sec 1/100 Sec 1/100 Sec Water Resistant Yes — — Yes Yes Yes Yes Count Up Yes Yes Yes Yes Yes Yes Yes Count Down — — Yes Yes — Yes Yes Timer — — Yes Yes — Yes Yes Lap Memory — — 8 60 — 100 500 Alarm — Yes Yes Yes Yes — Yes Clock — Yes Yes Yes Yes Yes Yes Pace Setter — — Yes Yes — Yes Yes Hourly Chime Yes Yes — — Yes — Yes Calendar Yes Yes — Yes Yes Yes Yes Battery Type (1) LR44 (1) AA (1) CR2032 (1) CR2032 (1) CR2032 (1) CR2032 (1) CR2032
