Retro Vintage Designed: Made of premium clear glass with vintage candle shape and traditional filament for a charming and nostalgic look. Energy Saving: 4W LED bulb, can replace 40W vintage halogen or incandescent bulb, reduce your electricity bill by up to 80%. Excellent Performance: 2700K warm color, create a warm and cozy retro atmosphere, and the excellent color rendering index (CRI > 80) provides a vivid and natural color. Easy Installation: Standard C35 shape with B15 base. Can be easily installed instead of ordinary B15 halogen bulbs. Ideal for use in kitchen, living room, bedrooms, hallways, table, floor lamps, chandeliers, pendant lights or ceiling lights. Eco-friendly: No mercury and other harmful substances, not only bring enough brightness, but also get safety assurance for your family.