Specification & Special Features: 1) The power: 3 W 2) Colors: pure white, warm white ,cold white, blue, red, green, yellow, RGB, etc. 3) Beam angle: narrow and wide 4) Bulb type: MR16, GU10, E27, ETC 5) Voltage: MR16=11-15V AC/DC , other types AC200-240 or 100-130V 6) LED source by TAIWAN chip or Custom-made 7) Protection Class: IP54 8) Working Temperature: less than 45 degree 9) Life span: 10 year of regular use 10) Shell material: Aluminum Alloy 11) Quality Policy & Certificate: ISO9001, CE, RoHS 12) Warranty: 2 years Note : 1) Super bright LEDs can injure the human eye at the close distance. These bulbs should never be looked directly at for more than a few seconds 2) Don't need Electronic transformer and electromagnetic transformer Application Case: Our LED lightings and LED modules are widely used in all over of Shenzhen , Such as indication system for Shenzhen Metro, Shenzhen Exhibition Centre, Train Station and Gas Stations and CITY decoration.