This kit is great- I through it together with my 3yr old daughter in about 15 minutes (including the soldering iron warm-up time and explaining safety/ what's going on) and she loved it! Everything fits/ works perfectly.
But... As a few others have mentioned, it lacks an on/off switch. The battery isn't the easiest to get out (which is good since you don't want it slipping out on it's own), but you can do that to turn it off. On the other hand, the battery type it uses is about $0.10/ each on ebay, so it's no biggie to order more.
I'd whole-heartedly recommend this to anyone trying to get their kids into electronics.
Beautiful fun product, well designed, a shame it arrived in sub-standard packaging. Ordered 3 units, they arrived wrapped in very thin bubble wrap in a regular paper envelope. Components pierced bubble wrap, tore through invoice, and pierced outer envelope. LED leads were twisted, button backing smashed beyond usability, a little bit of wear & tear to the i can solder front facing surface. I don't suspect the button backs are serviceable.
Components need to be shipped in such a way that they can survive the rigors of being mailed internationally. (I'm in the USA.)
Response from Part Fusion Electronics | Jan. 2, 2014
Sorry my attempt to keep the shipping costs low backfired for you. Your photo shows the components were very badly mangled and crushed. I have larger padded envelopes (still paper and bubble wrap) and I will now use them for all my shipping. Hopefully the larger padded envelopes are treated better by the postal system.
If you use the Report Issue link on the Order/Invoice page, I'll send you replacement badges. As reviews aren't linked to an order or customer, I don't know where to send them.
Fantastic, simple and easy to use, gives the student something to go away with that they have made. shows the joy of making. personally i would like to see it have a switch on it, i know you can take the battery out, but that risks losing it :-/ overall, very good :-)
I bought a handful to give my 11-year old Boy Scouts an introduction to soldering. They loved it! Easy soldering, hard to mess up, and fun to wear.
HOWEVER, they were shipped in a plain envelope which resulted in some of the butterfly clip/pin pieces getting damaged in transit. A padded envelope would make this a perfect intro-to-soldering purchase.