The Model 457 is an all purpose clipboard that includes both a split stopwatch and a full function calculator. The 457 features a dual display that allows the stopwatch and calculator to be used at the same time. A solar battery system is built into the unit to assure extremely long battery life.

• Time all activities and keep notes at the same time
• Time of day, date, month & alarm feature
• Large, easy-to-read dual line display
• Solar panel battery backup system
• Stopwatch and time of day clock on top display, full function memory calculator on lower
• Stopwatch times single & split timing events
• Calculator has full memory and percent keys
• Ruler and straight edge included
• Unique paper "guide" always keeps papers aligned
• Measures 9"x14"
• One year warranty