Battery case 3V, with 4-mm plugs

Battery-operated power supply, for simple and rapid generation of hydrogen and oxygen with fuel cells;
Battery compartment with on/off switch and snap lock, cable with two 4 mm plugs incl. two 1.5 V batteries (type Micro, AAA, LR03 alkaline)
Output voltage: approx. 3 V DC
Dimensions: 63 x 25 x 16 mm
Mass: approx. 42 g