Brightness: 850-lumens

Estimated yearly energy cost: $2.41 (Based on 3 hrs/day， 11c/kWh. cost depend on rates and use)

Lasts up to 21.9 years (based on 3 hours/day)

Light appearance: 5000K (Natural Light)

Energy used: 20 Watts

Lumens per watt: 42.5

T12 bulb shape， medium bi-pin base

Contains mercury: yes (for more info on cleanup and safe disposal， visit: epa.gov/cfl)

For indoor， commercial and residential use

Ideal for use in living spaces in need of simulated natural daylight

Contains mercury: yes (for more info on clean-up and safe disposal， visit: epa.gov/cfl)