6.Slide the battery cover back into its original position, and secure it in place with the screw.

7.Press the P button on the back of the calculator with a thin, pointed object to initialize the calculator. Be sure to perform this step! Do not skip it!

A Auto Power Off

Your calculator will turn off automatically if you do not perform any operation for about 10 minutes. If this happens, press the o key to turn the calculator back on.

Specifications

Power Requirements: AAA-size battery (ALKALINE): LR03 × 1

Approximate Battery Life: 1 year (based on 1 hour of operation per day)

Power Consumption: 0.12W

Operating Temperature: 0˚C to 40˚C (32˚F to 104˚F)

Dimensions: 15.1 (H) × 81.5 (W) × 163 (D) mm 5/8" (H) × 31/4" (W) × 63/8" (D)

Approximate Weight: 150g (5.3 oz)

E-137