General description Replace your 40W incandescent bulb with the 4W C35 B22 LED Filament Bulb, which offers over 80% energy savings. This vintage-style bulb features a classic design and emits a warm white light at 2700K with a brightness of 470lm, creating a cozy atmosphere. It is perfect for use in crystal lamps and various lighting fixtures. Technical specifications Power: 4W Brightness: 470lm Color Temperature: 2700K (Warm White) Socket Type: B22 Energy Efficiency Class: E Dimensions: C35 shape Installation Easy installation in place of regular B22 halogen bulbs. Usage Ideal for kitchens, living rooms, bedrooms, and hallways. Suitable for table and floor lamps, pendant lamps, and ceiling lamps. Other information High transmittance clear glass, mercury-free, UV-free, CE approved.