H-B DURAC 4-Channel Electronic Timer & Clock with Certificate of Calibration

This 4-channel timer has a capacity of 99 hours, 59 minutes and 59 seconds or can be switched to a 12- or 24-hour clock.

Counts either up or down; remembers the last time set
Lay flat on a bench, use the flip-open stand for a vertical view, or carry it on a lab coat with the convenient pocket clip
Requires one AAA battery (included)
Features a Certificate of Calibration and individual serial number, these electronic timers are tested and calibrated in H-B’s exclusive triple accredited/registered ISO/IEC 17025:2017, A2LA accredited laboratory (Cert #2448.01), against equipment whose calibration is traceable to NIST.
CE marked, RoHS compliant