Storage Capacity
Telephone: 3,900 records under the following conditions NAME/COMPANY: 10 characters
HOME: 10 digits
WORK: 10 digits
Schedule: 3,100 records under the following conditions DESCRIPTION: 20 characters
Alarm: On
One appointment per day
Memo: 5,200 records under the following conditions
MEMO: 20 characters
To Do: 4,300 characters under the following conditions
DO WHAT: 20 characters
Anniversary: 4,600 records under the following conditions DESCRIPTION: 20 characters
Specifications
Model: SF-3990
Memory capacity: 128 KB
Power supply: 2 lithium batteries (CR2032)
Power consumption: 0.02 W Battery life:
Approximately 2 years under the following test conditions: Unit turned on one hour each day.
Auto Power Off: Approximately 6 minutes after last key operation
Ambient temperature range: 0˚C~40˚C (32˚F~104˚F)
Dimensions: Folded: 13.9 (H) ⋅ 145 (W) ⋅ 91 (D) mm (9/16 " (H) ⋅ 511/16 " (W) ⋅ 39/16 " (D))
Unfolded: 10.3 (H) ⋅ 145 (W) ⋅ 178 (D) mm (3/8 " (H) ⋅ 511/16 " (W) ⋅ 7 " (D))
Weight: Approximately 120g (4.2 oz) including batteries