COB width: 10mm/ 8mm/ 5mm/ 3mm. Luminous flux: >100LM/W. LEDs quantity: 312LEDs/m (8mm),320LEDs/m (8mm),384LEDs/m (3mm and 8mm), 400LEDs/m (5mm),480LEDs/m (8mm), 528LEDs/m (10mm). Smallest cut unit: 21/41.66mm(3mm or 5mm PCB), 25/50mm(8mm PCB), 46mm(10mm PCB).