This is a easy soldering kit Some basic electronics knowledge is required, but the PCB has components marked on the board and step by step insructions are provided. You will need a fine bit soldering iron multicore solder and some tools .A jig to hold the board at the right angle to solder helps.I supervised my 9 year grandson with soldering (considering safety, he wore safety glasses ) identifying and,orientation of components .He assembled the kit himself and it worked first time,with a very good range of switchable siren sounds