DIY MCU Calculator Kit Digital Tube Calculator with

Features:LED display to show the data clearly.Pre-programmed design for easy operation.Includes add/subtract/multiply/divide/negative number/the decimal point function.Auto power off in 20s if there is no operation.Uses straight-in components easy to solder.With transparent case components can be well protected.Built-in CR2032 button cell for power supply.Specifications:Material: FR4 + AcrylicPower Supply: CR2032PCB Board Size: 8.8 * 8cm / 3.46 * 3.15inFinished Product Size: 9.8 * 9 * 1.6cm / 3.86 * 3.54 * 0.63inProduct Weight: 120g / 4.23ozPackage Size: Approx. 15 * 10.5 * 2.5cm / 5.91 * 4.13 * 0.98inPackage Weight: Approx. 137g / 4.83ozPackage List:1 * DIY MCU Calculator Kit1 * User Manual(English)