Description If you are looking for a professional and affordable mini light bulb, then your research is over here. Thatand 39;s because our product can satisfy your need. It makes easier to use in physical electricity experiment for laboratory and students teaching, suitable for middle school use. Features - Color: As shown. - Material: Glass. - Size: 2.00X1.00X1.00cm/0.79X0.39X0.39in. - Voltage: 2.5V. - Current: 0.3A. - They are mainly used in electrical experiments of middle and primary school. - With these small bulbs, students can learning many things about electricity and science. - Can be used to build small lighting circuit with other experiment kit (not included). - It is lightweight for easy storage and carrying, they are good tools for teaching. - It is manufactured with professional technology to ensure the good lighting effect.Package list: 10 x Light Bulbs