BRILLIANT DESIGN. LCD display. Measure: 3.75" x 2.25" x 0.25". 8 Digits display. Auto power off. Full function memory. Powered by batteries. Battery included. MINISize. Pocket calculators, smallSize is suitable for your business travel use. This easy to use calculator takes up little space on your desktop and fits into your briefcase or desk drawer. LONG LASTING POWER. Powered by batteries. Battery included. The calculator will function even in a dim place. The soft rubber button design in line with the use of human habits, comfortable for touch. NECK STRING. Comes with a neck string adds style and convenience. Never worry to lose your calculator. Reasonable configuration and comfortable. VERSATILE. Great for home, office, and on the go. Performs common math as well as various financial functions, Perfect for both adults and students.