TCP 75 Watt Equivalent, Single-pack CFL Spiral Light Bulb, Non-dimmable, Bright White,  5801835k ENERGY SAVINGS - uses only 18 watts! replaces 75 watt incandescent LONG LIFE - lasts 18.3 years based on 3 hours use per day. Rated @ 20,000 hours EXCELLENT COLOR CONSISTANCY - bright white 3500K, non-dimmable PERFECT FIT - use in table lamps, floor lamps and ceiling fixtures PLEASE NOTE - This light bulb has TruStart Technology - Instant on; fast run up time to full brightness; compatible with most OCC sensors (occupancy sensors) WORLD CLASS TECHNOLOGY - manufactured by TCP Lighting, a leader in energy efficient lighting innovation