fx-570CW

Power Requirements:

AAA-size battery R03 × 1

Approximate Battery Life:

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

Power Consumption:

0.0008 W

Operating Temperature:

0°C to 40°C (32°F to 104°F)

Dimensions:

13.8 (H) × 77 (W) × 162 (D) mm
9/16” (H) × 3 1/16” (W) × 6 3/8” (D)

Approximate Weight:

100 g (3.5 oz) including the battery

fx-991CW

Power Requirements:

Built-in solar cell; button battery LR44 × 1

Approximate Battery Life:

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

Operating Temperature:

0°C to 40°C (32°F to 104°F)

Dimensions:

10.7 (H) × 77 (W) × 162 (D) mm
7/16” (H) × 3 1/16” (W) × 6 3/8” (D)

Approximate Weight:

95 g (3.4 oz) including the battery