This Sper Scientific Stopwatch will count up or down to 20 hours in 1/100 second resolution and offers many advanced features for sports, laboratory and industrial use.

When decimal resolution is selected the timer can display results in increments of 1/1,000 of a minute or 1/100,000 of an hour as well as the usual 1/100 second mode. 500 memories of split and lap times.

The large 3 line display simultaneously shows total elapsed time, split time, current lap time, lap counter and indicates low battery. This Stopwatch also has a unique LCD contrast adjustment and touch tone selectable buttons. The sonically welded case insures excellent water resistance. Button cell battery included.

Features 5 timing modes:

• Stopwatch: Recalls split and lap times as well as the slowest, fastest & average laps.
  
• Timer: With 3 modes: count down and stop, count down and repeat, count down and then count up.
  
• Clock: Selectable for 12 or 24-hour format, with alarm clock, calendar and hourly chime modes.
  
• Stroke: Calculates average strokes, beats or pulses per minute based on the timing of 3 sample strokes.
  
• Pacer: Set from 5 to 240 beeps per minute.
  

Dimensions: 3¼” x 2½” x ¾”
Weight: 2.8 oz

*Certification Option
N.I.S.T. traceable Certificate of Calibration is available at an additional cost (select option above).

Downloads

Instruction Manual

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