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Specification: Quantity: 1 piece / Pack Brand: Chanzon Power: 100W Watt (Max) Emitting Color: Yellow Recommended Current: 3000mA Forward Voltage: 20-24V Luminous Flux: 7000-8000LM Emitting Angle: 120-140 degree With Double Golden Wire (99.99%) and Copper Frame Kindly Reminder: Constant current LED drivers are recommended for high power COB LEDs. Working temperature should be less than 60 Degrees Celsius / (140 Fahrenheit) with a Heat Sink System. Please refer to the positive (anode +) and negative (cathode -) sign on Leds. Related Accessories: Constant current LED drivers (3000mA Aluminum Case Waterproof): ? Search B01NBXZUS3 on Amazon LED Lens Kit 20-100W 44mm (60 degree): ? Search B06XKV9PWY on Amazon