Elliptical high output sodium lamp. Usually referred to as SON HO lamps. They give a golden white light and have a long life. They are suitable for use in industrial lighting, warehousing, street-lights and floodlights. 28,000 hour life. ES-E27 cap. 2000K golden white colour temperature. Colour rendering index =25. Not suitable for dimming. Recommended for indoor use only. Internal Ignitor.- 28,000 hour life- ES-E27 cap- 2000K golden white colour temperature- Colour rendering index =25- Not suitable for dimming- Recommended for indoor use only