CASIO

fx-570ES PLUS

Power Requirements:

AAA-size battery R03 (UM-4) × 1

Approximate Battery Life:

2 years (based on one hour of operation per day)

Power Consumption:

0.0002 W

Operating Temperature:

0°C to 40°C (32°F to 104°F)

Dimensions:

13.8 (H) × 77 (W) × 161.5 (D) mm
1/2" (H) × 3" (W) × 63/8" (D)

Approximate Weight:

105 g (3.7 oz) including the battery

fx-991ES PLUS

Power Requirements:

Built-in solar cell; button battery LR44 × 1

Approximate Battery Life:

3 years (based on one hour of operation per day)

Operating Temperature:

0°C to 40°C (32°F to 104°F)

Dimensions:

11.1 (H) × 77 (W) × 161.5 (D) mm
3/8" (H) × 3" (W) × 63/8" (D)

Approximate Weight:

95 g (3.4 oz) including the battery