... 2.Long lifetime , 30000H 3.High brightness, low consumption 4.Environment friendl LED bulb lamp 4W Specification: (1)Type: SJ ... °C (18)Ambient temperature: 15- +38°C(19)Quality Guarantee : three years Feature: (1)This 4w bulb light is using high quality ... ) Adopting high quality and low light failure, low power, high efficiency, high antistatic 3014 lamp beads as light source, the bulb light is energy ...