A. Dimming function: - This pack includes 10 G4 halogen bulbs with pin bases. They can be used in dimming circuits, are plug-and-play, and can light up immediately without waiting. They support stepless dimming from 0 - 100%. B. Long lifespan: - The bulbs are sized 30 * 8 mm. This 12V 10W G4 halogen bulb emits up to 140 lumens of warm white light with a color temperature of 2700K, bringing warmth and brightness to your home. The average bulb lifespan is up to 2000 hours, reducing the need for frequent replacements. C. Eye - friendly design: - The G4 halogen bulbs are free of lead and mercury. They have a color rendering index of over 80, making colors closer to real, and the light is flicker - free and ghost - free. D. Multiple uses: - They are widely used for accent lighting, under - cabinet recessed lights, chandeliers, wall lamps, cabinet lights, floor lamps, table/desk lamps, track lighting, as well as for landscape lighting, in RVs, caravans, boats, yachts, etc.