This is a set of LED chip beads. Made of , these beads are durable for long-term use. It's a sources for fish tank, decoration light, aquarium, landscape lighting, light, spotlight, etc. Please refer to the notes before use. Features - - Light Color: White. - Material: Copper and Wire. - Size: Approx. 1.44 x 0.8 x 0.55 cm. - Power: 1W. - Rate Voltage: DC 3.2-3.4V. - Work with a constant current LED driver. - It will work more than 50000 hours if the working temperature is less than 60 Degree Celsius. - Need to work with heat sink or thermal silica, otherwise the light will die due to too much heat. - sources for fish tank, decoration light, aquarium, landscape lighting, light, spotlight, etc. - Reminder: Please do not look directly at two meters so to protect your eyes. - NOTE: 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. Package list: lamp beads