The Philips Hue Smart Wireless Dimmer Switch V2 is a sleek and modern rectangular device that operates on Lithium Ion batteries. This dimmer switch allows you to easily control the lighting in your home wirelessly, with the convenience of being battery powered. Included in the package are the necessary batteries, and it is designed for easy wall mounting. Compatible with Philips Hue smart home systems, this switch offers a stylish and practical solution for lighting control in your home.