The Time Master II is a versatile easy-to-use calculator for time-math measurements conversions schedules rate-based estimates and solving elapsed time calculations using its built-in stopwatch/timer, Instantly determine time-based costs and rates for billing and estimates, It is an ideal tool for Cooks and Chefs monitoring cooking time up or down, Students and public speakers time presentations, Coaches and Athletes use the Time Master II Stopwatch and Timer with Split/Lap feature to track elapsed times and performance, Calculations: Quickly Perform Tedious Time-Math Calculations Accurately Track or Schedule Hours Cut Production Costs and Scheduling Errors Built-in Stopwatch and Timer with Alarm Ideal for Time/Rate Estimates For Broadcasters Electronic Media Producers and Editors Pilots Flight Attendants Travel Professionals Coaches Athletes Accountants Production Schedulers Estimators Chefs Consultants Trainers Speakers SKU: CALC021