1. Mini hamburger calculator comes with colorful keys.
2. Mini Hamburger calculator comes with colorful keys. It can be a good promotional calculator. These custom calculators can be imprinted with your logo or mascot. If you give away to students. Students will be happy to return back when you give them the 8-digit display calculator. They’ll show them home to show these off to other friends and their parents, making for a great exposure opportunity.