– 75 –
Clock:
World time; reminder alarm; schedule alarm; daily alarm; accuracy under normal
temperatures: ±3 seconds average
Calculation:
12-digit arithmetic calculations; independent memory; percentages; square roots;
other mixed calculations
General:
Display element: 26-column × 8-line LCD
Memory capacity: SF-5580: 128KB
SF-5780: 256KB
SF-5980: 512KB
Main component: LSI
Power supply:
Main: Two AAA-size alkaline batteries (Type: LR03 (AM4))
Back-up: One CR2032 lithium battery
Battery life:
Main: In Telephone Mode, approximately 100 hours continuous display;
approximately 70 hours with 5 minutes operation and 55 minutes
continuous display per hour; approximately 60 hours with 5 minutes
operation and 52 minutes continuous display, and 3 minutes
backlight operation per hour
Back-up: 5 years if main batteries are replaced as soon as they become
weak. 6 months if dead main batteries are left in the unit.
Power consumption: 0.25W
Auto power off: Approximately 3 minutes after last key operation
Operating temperature: 0°C ~ 40°C (32°F ~ 104°F)
Dimensions:
Unfolded: 8.8H × 163W × 169D mm (
3
/
8
"H × 6
7
/
16
"W × 6
5
/
8
"D)
Folded: 21.5H × 163W × 91.5D mm (
7
/
8
"H × 6
7
/
16
"W × 3
5
/
8
"D)
Weight: 251g (8.9 oz) including batteries
