E27/E26/B22 High Power 5W LED Bulb,PFC>0.98,no electrolytic capacitor power driver,4yrs warranty,CE/RoHS/ETL.Temprise < 20,light transmittance >94%. 4 Years Warranty, Self-mold LED Bulb Light, Category: LED Lamps Bulb Light, LED Bulb Light, LED Bulb Lighting ,Dimmable LED Bulb Light, Fluorescent Light Bulbs, LED Lighting Bulb, Energy Saving Light Bulbs, LED globe-shape bulb, LED ceramic bulb Distinctive Features 1. LED Bulb Lamp With Unique Design: Self-opening mold, self R&D center. 2. Power supply: Patented, new technology, without electrolytic capacitor, 50,000 hours lifespan. Power efficiency>0.87 3. Excellent Heat Dissipation Structure: Temperature rise < 20, protect LED's effectively and increase LED bulb's lifespan. 4. Optical Feature: PC cover, light transmittance >94%, light uniformly, and high efficiency. 5. Quality Guarantee = 4 times check + 5S IQA + IPQC + FQA + OQA 4 years warranty! 6. R&D capability: LED encapsulation, LED lighting, driver design, thermal design, optical design, shape design Parameters: Specifications of LED Bulb Lighting name 3Watt High Power LED Bulb Light Lighting source 3pcs 1W high power LED Input voltage AC85-264V, 50/60hz Power supply Internal constant current Material Aluminum housing , or PC cover with customized diffused material, transmittance>94% Lamp holder E27,E26, B22 Luminous efficiency >85 Lm/W Color temperature 2500-3200K, 3800-4500 K, 5800-6500K Power factor 0.98 CRI Ra76 Working temperature -25~50 Environment humidity <90, >10% Working environment Indoor use (applicable for dry environment) Life-span >50,000hrs Certification CE, RoHS and ETL Warranty 4 years