Jotter Calculator Note Pad with Pen, Pink/Silver, For School, Office, Travel. DUAL-POWER CALCULATOR : Dual-power calculator uses battery or solar energy. FUNCTION : Multi-function calculator for school, office, field work, etc.. INCLUDE : Features a pen loop & includes a quality ball point pen (color & style may vary) USE : Uses many standard notepad refills. SIZE : Handy 3.5" x 6" pocket-size notepad for on-the-spot record keeping.