Save electricity bill. Replace 30W T3 halogen bulb by 3W LED. Save over 90% on electricity bill of lighting. Maintenance Free. Extremely long life LED bulbs in it, save cost to replace bulbs with short lifespan. Eco-Friendly. No lead or mercury. Solid State. Shockproof and vibration proof. No Hazardous Emissions. No UV or IR Radiation. ACDC12V lamp can work on both AC12V and DC 12V, so if your voltage is AC12V, pls choose ACDC12V. If you don't know your voltage is ac12v or dc12v, pls choose ACDC12V bulbs. WHY LED? Reduce your electricity bill and save money Help preserve the environment by reducing carbon footprint New technology provides increased lifespan compared to less-efficient incandescent Wattage: 3W Base Type: G4 LED Chip Model: COB LED Beam angle: 360 degrees Dimensions (Φ*H): 10X32(mm) Color Temperature: Warm White: 2800 - 3200K / Cold White: 6000-6500K APPLICATIONS Chandeliers,Kitchens Living Rooms,Dining Rooms Bedrooms,Hallways Shopping Malls,Office Building Hotels,exhibition halls, hospitals Colour:Photo Color Material:Electronic Accessories type: A/B/C/D type: AC/DC12V/AC220V Package Contents: 10 x G4 LED Bulbs Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.