DIY MCU Calculator Kit Digital Tube Calculator

Description: This is a DIY calculator kit It have Add, subtract, multiply, divide, negative number, and the decimal point function. Easy through hole soldering No need computer, the Calculator Kit comes pre-programmed Six bright red 7 segment LED modules Powered by a single CR2032 battery Instant-on Automatic sleep Extra long battery life Layered laser cut acrylic case Size: 99*91*18mm Package included: 1 x DIY MCU Calculator Kit