Includes

• 1 support for 12 cells;
• 4 electrode holders;
• 12 red LED's of 4 mm with 10 cm of length;
• 12 black LED's of 4 mm, 10 cm long;
• 4 red LED's of 4 mm, 25 cm long;
• 4 black 4 mm LED's, 25 cm long;
• 1 copper sheet of 150x150 mm;
• 8 crocodile tweezers;
• 4 switches;
• 40 bulbs (4.5V, 0.3A);
• 12 carbon rods;
• 50 m of copper wire;
• 50 g of secondary yarn;
• 50 m of insulated copper wire;
• 4 universal clips;
• 20 lamp holders;
• 8 soft iron bars;
• 4 silicon diodes;
• 4 fixed resistors;
• 8 pressure switches;
• 4 rheostat units;
• 1 spool of wool yarn.

Supplied with instruction manual.