Buy Alert: Incandescent bulbs and halogen dimmers are not compatible with LED bulbs. ELV dimming or MOS dimming is recommended. 4W, 400lm, Warm white (2700K) create a warm and comfortable environment, ideal for family use. Combining advanced technology with retro design, suitable for pendant lamp, ceiling fan, wall lamp, desk lamp and pillar lamp. Standard E14 base, instant on, no delay. Overload protection, short circuit protection, overheat protection.Very low power consumption, saving up to 80% energy, perfect replacement for halogen or incandescent lamps. High quality filament, up to 10,000 hours of service life.High color rendering (CRI>80) provides vivid colors and effects.