Pellor Diamond 504 Sport durable Mechanical Timer Stopwatch Analog Stopwatch 1/10 second recorder 6h extended running time with 13 jewels, is perfect for timing races(size:77.4x55x14mm)

30-hour timing range stopwatch with dual-split (cumulative and lap) timing
Includes 30-event memory, 1-2 fast finish, split counter, average-split compute, and lap and total speed rate
Uses the exclusive ACCUSPLIT Operating System (AOS)

Voltage monitoring from 11.0v to 16.0v
Clock, stopwatch and lap counter
Attaches with Velcro

24-hour timing range, cumulative-split stopwatch
Includes time of day, day of week, date, and alarm features
Uses Watch Company Operating System (WOS) 2.5

100 Dual Split Memory
Take splits while reviewing the memory
Continuous display of event running with current Lap running option