1、This light bulb adopts good quality materials, the light shell is heat-resistant and durable, its great heat-dissipation feature can lengthen its lifespan 2、The light bulb is clear with high transmittance, it can spread the light evenly without any dark corner for lighting wider area 3、Good quality COB ensures high brightness and low light decay. No flicker, 360 degree beam angle can offer omni-direction lighting 4、Standard thread is compatible with the socket of many lighting devices. Easy to install and use, instant start without any latency 5、Stable power supply, low power consumption, more energy saving compared with conventional street light, it's a economical choice for you Features: This light bulb adopts good quality materials, the light shell is heat-resistant and durable, its great heat-dissipation feature can lengthen its lifespan.  The light bulb is clear with high transmittance, it can spread the light evenly without any dark corner for lighting wider area. Good quality COB ensures high brightness and low light decay. No flicker, 360 degree beam angle can offer omni-direction lighting. Standard thread is compatible with the socket of many lighting devices. Easy to install and use, instant start without any latency. Stable power supply, low power consumption, more energy saving compared with conventional street light, it's a economical choice for you. Specification: Material: COB+Glass+Metal Options: Warm White-G9; Cold White-G9; Warm White-E12; Cold White-E12; Warm White-E14; Cold White-E14 Input Voltage: 220V Power: 4W (Stable 3W) Luminous Flux: 160-170lm Beam Angle: 360 degree Color Temperature: Warm White-3000K; Cold White-6000K Socket Base Options: G9/E12/E14 Dimming: Yes (depends on voltage) Size: Approx.  G9-20*58mm / 0.79 x 2.28inch;  E12-18*56mm / 0.71 x 2.20inch; E14-19*58mm / 0.75 x 2.28inch Weight: Approx. 18-20g Package List: 1 x Light Bulb