Selfi 20cm RGB is a smart light that can be used for a variety of purposes. It has a 20cm diameter and can emit 16 million colors, which can be controlled through the phone app. The Selfi 20cm RGB is portable and can be used in different locations. The light can be set to an automatic color mode or can be controlled manually with the app. It is made of silicone and aluminum, which makes it durable and lightweight.