Double Helix Design: This bulb features a double helix filament for 360-degree surround light providing more comprehensive illumination Energy Saving: 4W bulb is equivalent to 40W halogen lamp saving energy by over 90% Safe And : Bulbs are tested and certified from IR and radiation no no lead CE and RoHS approved Retro Style: Clear glass with 2700K warm white light creates a cozy atmosphere and helps you relax Wide Use: Edison bulb works great for ceiling fixtures chandeliers pendants home bars hotel restaurants cafes stores and industrial fixtures [Wide Application Light Bulbs] These light bulbs are ideal for kitchen, living room, dining room, bedroom, hallway, coffee shop, ceiling light, pendant fixture, chandelier, desk lamp, floor lamp, bedside table lamp, etc.