Product Type: ST21(ST64) 6W Dimmable Frosted LED Filament E26 Base 4200K (6Pack) Base Type: E26 Shape Type: Antique Edison Style, Frosted Glass Working Voltage: AC 110V-130V Color Temperature: 4200K Luminous Intensity: 600LM Beam Angle: 360 Degrees Size: Diameter 2.5 Inch x Height 5.5 Inch Material: Metal and High-Strength Glass Light Source: 6 COB-LED Life Span: Average 30000 Hours Lifespan,16 Years Life (5 Hours per Day) Mercury-free,No UV,No Flickering,CE and RoHS Authenticate Application: Family Lighting, Offices, Executive Offices, Class/Show/Reading Rooms, Shops, Supermarkets, Public Reception Areas, etc. Please Note: 1.Most traditional incandescent or CFL bulbs dimmer can not be used for LED bulbs dimming,and some poor quality dimmer may cause flicker or not-working,to dimming these LED bulbs,please upgrade your dimmer switches/lamps to support LED bulbs. 2.In LED industry,there is no unified technical specification, different bulbs and LED dimmers usually are designed by different technology,so some kinds of LED dimmer are not compatible with CRLights DIMMABLE LED bulbs,especially smart dimmers and switches.