Features: Elevates your soldering skills with this electronic project kit, help you craft a practical desktop calculator while deepening your familiarity with electronic components. Suitable for soldering practice and single chip microcontroller welding exercises. The LCD screen clearly displays number, and the large button size prevents you from hitting the wrong button. This soldering practice kit is easy to build with clearly connections on board. Perfect for both school soldering practice and education, this electronic soldering project kit comes with a paper instruction manual for easy assembly step by step Please note that this electronic soldering kit requires a certain of basic electronic theoretical knowledge, welding skills, and hands-on ability Specifications: Component:Plastic Size:Approx.9x12.8x1.55cm/3.54x5.04inch Package Includes: 1 Set Calculator Electronic note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.