Lathem Calculating Atomic Time Clock, Includes Mounting Clip, Gray (7500E) Calculates actual or rounded time and accumulates total worked hours Handles up to 100 active employees or jobs; Optional automatic break deduction from totals Auto-feed and auto-eject of time cards; Fully automatic print alignment Print 12-hour (AM/PM) on 24-hour time and print regular minutes (1/60) or 1/100 of hour Unlimited punches per day; Wall or table mount. Operating temperature: 23F to 113F (-5C to 45C)