Calculator Card Holder. Three-in-one card holder is a busy businessperson's best friend! Handy companion combines a solar calculator, miniature ballpoint pen, and secure holder for your business cards. Eye-catching colors add a bright bit of fashion to this travel companion. Plastic. each, sold in a pack of 6. Each is 4" x 1/2" x 2 3/4" high. Perfect for office or school supplies.