Quantity: 20M=300 (15 LEDs/M). Size: 5050RGB: 1M / 2M / 3M / 5M / 10M/ 15M /20M (Optional)--1 roll. LED type: 300pcs SMD 5050 LEDs. Light RGB (16 Multicolors). LED chip number: 5050. (Note: This light is RGB led tape, temporarily does not support white light. ).