Philips 418392 3-Watt (20-Watt) AccentLED T3 Desk and Cabinet G4 Base 12-Volt Light Bulb (2 PACK) Philips 3-Watt Accent LED Energy Saving T3 desk and cabinet light can replace your 20-Watt halogen T3, saving you up to 27.22 in energy costs Provides a soft, white light For use in 12-Volt fixtures G4, Bi-pin base T3 desk and cabinet light lasts at least 15 years Contains no mercury