Package: You will receive 1pc thin 8 digit calculator, suitable for home or in offices; Power supply: The thin card calculator features a solar-power design, eliminating the need for batteries or external power supply. It can be used in well-lit conditions and automatically shuts off in dark, making it extremely convenient; Compactly: The solar-power pocket calculator approximately 3.35x2.09inch, is lightweighted, and easy to carry; The portable small calculator is from , lightweight yet durability, and resistant to breakage; option: The credit card-size calculator is easy to carry for accountants, financial tellers, and others who frequently need to perform calculations.