14 digits big display solar and battery powered, two way power Glass Button Green PCB Anti-shake Anti-Shock Anti-press Has 112 steps check Extra large display Chek correct Auto Revies Item : Portable Multifunctional Calculator LCD display: read the results clearly in two lines display mode. Upgrade Motherboard: works more steadily. High quality material: durable for use. Multifunctional mathematics calculator: can use to calculate advanced functions. Excellent quality. Product quality is stable and responsive Comprehensive computing functions, considerate angles, easy viewing. Brand No Brand SKU 100086130_NP-1020343002 Model CT - 140D+