Digital countdown, count up 2-channel timer with large display which will indicate either channel via separate push buttons. Both channels count up or down from 1 second to 24 hours and have an audible alarm at the end of the period. The case includes a stand, clip and magnet attachment. Supplied with 1.5v AAA battery. Dimensions 90x67x19mm Weight 68gm. MCAL-TM calibration certificate available.