Never find yourself without a replacement bulb when a light goes out, keep yourself prepared this holiday season. There is no need to throw out an entire string of lights ever again. These C9 bulbs are UL certified and approved for indoor or outdoor use. Product Features: Color: red Finish: opaque Bulb size: C9 LED lights use 90% less energy Durable glass bulbs Super bright bulbs Cool to the touch UL certified and approved for indoor/outdoor use 120 volts, 0.8 watts Dimensions: 3.25" high x 1" diameter Material(s): glass Note: pack includes 4 of the item pictured