3W MR11 GU4 LED Bulb: AC/DC 12 Volt; 3W; 38mm (length) x 35mm (base diameter); Cool white 3000K Energy saving: low energy consumption, 3W MR11 GU4 LED bulb is equivalent to 35W of incandescent bulb, save more than 90% electricity Long lifespan: With a lifespan of up to 30,000 hours, you can reduce the hassle of replacing your bulbs frequently Attention: This 3W MR11 GU4 LED bulb is not dimmable, do not use it with a dimmer to avoid flickering and noise problems 3W MR11 GU4 LED bulb suitable for bedroom, dining room, conference room, living room, showroom, shop, hallway, booth, studio and exhibition etc.