Gakken MYKIT 80 electronic project kit, a learning electronics experiment set said to allow 80 circuit experiments (as described). - Brand: Gakken - Model: MYKIT 80 - Marking on the box: MADE IN JAPAN, NO. 81562 - Components: transistors, diodes, capacitors, resistors, relay, variable capacitor, antenna coil, speaker, solar cell - Power: 3V battery (battery case present; the negative wire is detached) and 9V battery (snap present; batteries not included) - Also shown in the photos: loose jumper wires, a small earphone-type adapter with suction cups, and a folded instruction leaflet (battery and microphone adapter instructions). Their inclusion as shown is not guaranteed to be complete. - Circuit diagram book: not included Condition: Used, old kit. Not tested; we could not confirm operation. Some parts may be missing. The box and the main unit have dirt and wear, and the 3V battery case has a detached negative wire. The box is relatively clean for its age. Not suitable for buyers who expect pristine condition. Ships from Japan with tracking.