I'm selling this because I rarely use it anymore. The size is 45cm in diameter and 16cm in depth. It provides even and smooth lighting, and by completely enclosing the camera lens, you can create shadow-free photos. Circular flashes are easier to catch light more accurately, so you can create circular catchlights in the subject's eyes, making them look more beautiful. Thank you for your consideration. #roundflash #ringlight #diffuser #cameraaccessories