Rayhoo 4pcs Set G4 57-LED Warm White Light Crystal Bulb Lamps 3.5 Watt AC DC 12V Non-dimmable Equivalent to 30W T3 Halogen Track Bulb Replacement LED Bulbs Save electricity bill: Replace 30W halogen bulb by 3.5W LED, save 85% on electricity bill of lighting Light angle: 360 Directional;57 LEDs,AC/DC 12V (10V-20V);Undimmable. Easy Installation:Standard G4 base,can be easily fitted instead of ordinary halogen bulbs. Reduce re-lamp frequency:Lifespan is over 20000 hrs,save effort and maintenance costs on changing bulbs frequently. Eco-Friendly:No lead or mercury; No UV or IR Radiation.