LED CALCULATOR SOLDING KIT: By soldering our Calculator kit,You will get a delicate desktop calculator, While you improve your soldering skills,And at the same time.You will get a practical gadget to increase your efficiency in your study or in your work. MULTIFUNCTIONAL OPERATIONS: This 7-digit LED1602 display calculator soldering kit is capable of performing basic arithmetic in addition. It also supports 4-5 ring color ring resistor/LED current limiting resistor/decimal system and hexadecimal/square root arithmetic.Powerful function. Can meet most areas of calculation. SIMPLE ASSEMBLY: This 7-Bit LED1602 display calculator kit assembly is not complicated,You can according to our drawings and PCB marked above the location of the easy to complete it,Of course, You also need to have a little soldering skills as a prerequisite,When you complete this kit, You will be proud of you. EXTENSIVE PROJECTS:This welding kit is suitable for personal hobbies, Welding group activities, School welding programs, Helpful for improving welding skills, And a fun project for friends, Classmates, And welding exchanges together. SPECIAL GIFT: The 7-digits Calculator DIY Kit can be given to a soldering enthusiast near you. You can also finish it to give to your coworkers. Friend. Its practicality is perfect for a birthday gift. Holiday Gift. It will be a gift that will surprise people. Colour:As Shown Material:plastic Due to different batches, there may be differences in product appearance and printed text, which will not affect use Package Contents: 1 x Calculator Soldering Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.