H-B DURAC Single Channel Electronic Timer with Memory and Clock and Certificate of Calibration (B61700-3000) This DURAC digital countdown timer features 23hr:59min:59sec count up/down time, 12/24 hour time display, and memory Dimensions: 70mm x 51mm (2.8in x 2in); has a fold away stand, pocket clip, and a magnetic back Channels: 1; hours: 23; minutes: 59; seconds: 59; accuracy: 3 seconds; memory: yes; clock: yes CE marked and RoHS compliant. Timer features multi-language instructions comes with a Statement of Traceability indicating accuracy traceable to NIST and DKD Timer is tested and calibrated in H-B's exclusive triple accredited/registered ISO/IEC 17025:2005, A2LA accredited laboratory against equipment whose calibration is traceable to NIST and DKD/PTB