American Lighting Dimmable LED C7 Transparent Light Bulbs, E12 Candelabra Base, 2400K Ultra Warm White, 25-Pack Dimmable, LED replacement bulbs for indoor/outdoor light strings Professional grade LED lamps last 25,000 hours (6,250 days at 4-hours per day equals 17.1 years) Candelabra base, ultra warm white 2400K color temp C7 bulb shape, 120-volts, 0.5-watts, 12-lumens 25-pack, candelabra base lamps, use with string light model: LS-C-12-BK