Halogen Bulb MR11 GU4: 35 x 35mm, GU4 Plug (4mm between 2 pins). Standard shape MR11, 20W, 38 degree beam angle, 200LM, input voltage 12V. Suitable for any MR11 socket (not suitable for MR16). Dimmable: Halogen MR11 GU4 is dimmable. You can adjust the brightness to different lighting needs with a dimmer switch, no flickering. Instant start, no delay. CRI>90, no UV radiation, better protection for your eyes. 2000 hours service life: This lamp is made of high-quality materials. High brightness and low power consumption ensure an average use of 2000 hours, which reduces the problem of frequent lamp changes. Application: MR11 GU4 spotlight bulbs are suitable for recessed lighting, track lighting, accent lighting, landscape lighting. Widely used in offices, exhibitions, homes, hotels, museums, restaurants, shops, etc. Good tips: This product is plug and play, easy to install and suitable for any MR11 lamp holder.