Cold white LEDs are perfect for creating brilliant, energy efficient lighting for your home or office or bathroom. These are specially designed to brightly and appear like a cool, white light. WARNING: This light is EXTREMELY BRIGHT and gets EXTREMELY HOT. It will burn / blind you and must be mounted on a metal heat sink or otherwise properly cooled fixture to use properly. You also MUST use a resistor with this device to limit current to 1.5A MAX.