Lathem Tru-Align Time Clock and Stamp, 5.7" x 6.3" x 7.2" (1600E) Synchronizes time via radio wave to the US atomic clock in boulder, Co; Print time in am/pm or 24 hour format Super-bright LED light illuminates Print area for Easy viewing Tru-align option provides fast printing and Perfect punch alignment (25 tru-align time cards included) Perpetual calendar until 2099 (changes year, month and date automatically); keeps time during power outages Choose from 18 preset Print formats and 13 preset messages: rcvd, sent, in, out, cfmd, filed, paid, used, faxed, void, origin, apr'd, comp'd.Choose from 13 preset messages: RCVD, SENT, IN, OUT, CFMD, FILED, PAID, USED, FAXED, VOID, ORIGN, APRD, CMPLD