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Operation Guide 437/438
Specifications
Accuracy at normal temperature: ±15 seconds a month
Display capacity:
• Regular timekeeping
Hour, minute, second, am/pm, year, month, date and day... on its double display
Time system: Changeover between 12/24 hour formats
Calendar system: Auto-calendar pre-programmed to the year 2079
• Calculator mode
8 digits (7 digits for negatives)
Abilities: Four basic calculations, chain & mixed operations, constants for + / – / ×
/ ÷, power calculation
Decimal point: Full floating with underflow
Overflow check: lndicated by the “E” sign, locking the calculator mode
• Stopwatch mode
Measuring capacity: 23 hours, 59 minutes, 59.99 seconds
Measuring unit: 1/100th of a second
Measuring modes: Normal time, net time, lap time and lst-2nd place times
• Dual time mode
• Daily alarm mode
• Hourly time signals
Battery:
• (Module No. 437)
One lithium battery [Type: CR-2016]
Approx. 5 years operation on type CR-2016 (lncludes the alarm for 20 seconds
and calculation for 1 hour per day)
• (Module No. 438)
One lithium battery [Type: CR-1616]
Approx. 3 years operation on type CR-1616 (lndudes the alarm for 20 seconds
and calculation for 1 hour per day)
NOTE: THERE IS NO WAY unit components can be damaged or malfunction, due to
misoperation of buttons. If confusing information appears on the display it
means entry sequence was incorrect. Please read the manual and try again.