This smart doorbell is a great addition to any modern home. With wireless connectivity and a 5V power source, it allows for easy installation and convenient use. The X9 XW133-X9 model features a round shape, white color, and plastic material for durability. It comes with a video doorbell and a charging function, as well as auto capture and video talking capabilities. The doorbell is powered by batteries, which are included in the purchase. This smart home protocol includes Bluetooth and Wi-Fi, making it compatible with many devices. The doorbell is made in China and is suitable for use on doors and door hardware.