These aren't kits, as much as they are an inexpensive bag of components so you can build yourself a Symet along the lines of the PMK Trimet.

Basic instructions included on how to free-form (solder without using a circuit board) a 1381-based Solarengine, and how to assemble the mechanics. The Symet parts bundle includes: 3904 & 3906 transistors 2.2k resistor 4 1000µF capacitors SCC3733 x 1/2 Solarcell RM1a Motor 3 large paperclips 1381J trigger & diode Print-outs of free-forming instructions

Note: The 1381 version is a bit harder to build, but more power-efficient.. Please note that to bring this package to you at such a great price, we cannot offer the same 100% satisfaction guarantee as we do our full kits.