Specification: Material: metal, glass Light color: yellow Base type: E10 screw base Maximum working voltage: DC 2.2V Maximum working current: 0.25A Overall dimensions: 22mmx10mm/0.9''x0.4'' (height x diameter) Packaging: E10 spotlight pen crystal bubbles x 10 The light bulb has low power consumption, strong impact resistance and long service life. Color: yellow; Base type: E10 screw base; Maximum operating voltage: DC 2.2V; Maximum operating current: 0.25A. The micro light bulb is a glass dome design with a metal threaded base. Widely used in flashlights, equipment indicator lights, instrument lights, signal lights, warning lights, indoor lights, circuit experiment lights, microscope lights, amplification devices, train model lights, book lights, holiday decorations, mirror decorations, etc. The side of the lamp holder is the negative pole and the bottom is the positive pole; it is easy to install, just remove the old bulb from the lamp holder and screw in the new bulb. Please provide a voltage that matches the rated voltage of the small light bulb. If the working voltage is too high, the light bulb is easy to burn out; If the working voltage is too low, the bulb may not light up.