Base type: E27/E26 Input voltages: 90 to 264V AC Dimensions: 49.3 x 64mm Light source: Edison Power consumption: 4W LED quantity: four pieces Luminous flux: 280/350lm Color temperatures: Cool white: 5,500 to 6,500K Warm white: 2,700 to 3,300K LED drive mode: built-in constant current mode Shell: aluminum profile Lens: glass Beam angle: 60° Working environment temperature range: -20 to 50°C Colors: cool and warm white (single colors are also available) Lifespan: 40,000 hours No UV or IR radiation Heat sink: special stamping radiator CE and RoHS compliant Energy-saving and eco-friendly Customized LED quantities are welcome Applications: retail shops, restaurants, hotels, families, museums, art galleries, cosmetics, exhibition centers, and showrooms