... .CW, R,G,BBeam Angle: 25°Operation temperature: -20°-+50°Fixture Material: AluminiumLife Span: 50000hSize: dia: φ 160 x 78 mm , HOLE ... resistance, can serve as long as 50000 hours. 3.Healthy Lighting. Without ultraviolet and infrared, no radiation. 4.High Efficiency. 80 ... % of the electricity heating transferred into the lighting, low heat.5.High Brightness, Low Calory.6.Adopt the ...