Alpine RBSLED12 GU 4 Base MR11 LED Replacement Bulb, Cool White These lights have low power consumption, long life span, low heat output and are inexpensive to operate Bright white accent halogen replacement bulbs create a wide beam of light Great for fountain, ponds and indoor/outdoor lighting fixtures Available in MR11 bulb shape and cool white color Measures 1-3/8-inch across reflector diameter