SPER Scientific Timers Certified Simult

SPER Scientific Simultaneous Start Timer, 2-1/2 X 2-7/8 X 1/2 In, 100 And 10 Hours Range, 1 And 1/100 Second Resolution, Red, 4 And 1 Count Up, 4 Count Down Channel, 2 Oz Weight, With Two Button Cell Batteries, Nist Traceable Certified, Multi Channel, Various Channels Can Be Set Independently But Started Simultaneously, 5th Channel Works As Calendar And Alarm Clock, 6th Channel Works As Stopwatch, Lap And Split Functions, Built-In Stand For Bench Top Use, Pocket Clip And Magnetic Back - SPER