The chips: taiwan epistar chips, double gold chips, higher lumens and longer life.Lamp body: high density stainless steel body, it has corrosion resistance, crack resistance and waterproofness.Radiator: high precision heat radiator is to protect the driver and light source effectively.Waterproof:multiple and strongly waterproof interface and superiorwaterproof rubber ring with good sealing performance. Parameters of the light: material 304 stainless steel (316 could be customized)power 72w, 180wvoltage 24v, 2220vbeam angle 10, 30, 60, 90(degree could be customized)diameter 300mmheight 185mmcolor rgbwwwyprgbrgbwrgbacontrol method single color control, colorful internal control and external control, dmx512, remote control, wifi controller.Life span 50000hrwaterproof ip68environmenttemperature -40-+50certifications iso9001, ce, rohs, ip68color temperature 3000k-6000kled chips epistarcreelumens 90-100mlwterms of payment tt, western union, paypal, lcshipping method by sea by air by express by logistic application, the underwater pool and pond led lights is used in any under water, pools and ponds , as landscapes.