Feature:1. [MULTIFUNCTION CALCULATOR] The TY -837 is more than just a calculator. It features multiple functions such as percentage operation, memory subtraction key, and memory addition key. It's a versatile tool that caters to various mathematical needs.2. [DUAL POWER SOURCES] This scientific calculator operates on dual power sources - solar and 1*AAA battery (not included in the package), ensuring continuous and reliable power supply for your calculations.3. [ LCD Screen ] With its 12-digit double-line LCD display, this desktop calculator clearly shows your computations, making it easy to read and interpret results.4. [PORTABLE AND CONVENIENT] Its compact design makes the TY -837 an ideal travel companion. Lightweight and easy to carry, you can take it with you to work, school, or anywhere you need to perform calculations.5. [DURABLE AND USER-FRIENDLY] Made for everyday use, this calculator is durable and user-friendly. It's a valuable addition to any office desk or school bag.Specification:Size: 153x120x50mmWeight: 126gBattery Operated: 1 x AAA (Not Included)Package List:1 x Calculator