Casio SF-4400 Owner's Manual page 27

PART 8 Technical Reterence
Auto power off: Approximately 6 minutes after last key operation
Operating temperature: 0°C ~ 40°C (32°F ~ 104°F)
Dimensions:
Unfolded: 10.6H x 144W x 159.5D mm (7/,"H x 5'/)"W x 61/,°D)
Folded: 12.4H x 141W x 82D mm (1/2"H x 54/,"W x 317,"D)
Weight: 98.29 (3.5 oz)
100