Method Lights Wireless Picture Accent Light - Battery powered with long-life (Up to 250 Hours) rechargeable battery pack and charger (included). We recommend that you charge the unit at least once a month. Please keep in mind that even when the light is OFF the units computer is still in Stand- By mode looking for the remote control signal. This consumes a small amount of power on a continual basis. To make sure you get the most out of your ML200Plus keep it fully charged . Cordless design with easy ceiling mounted installation. Finish: Matte, ceiling white (Paintable). Installs in minutes  all hardware included adjustable Lens: Beam diameter of 20 to 60 at 6 from artwork. Included remote control with timer (Timer: 3 hr. automatic shut off w/ 3 or 6 hr. extention  on remote), dimmer (Dimmer: Ideal lighting intensity  on remote), and temperature settings . This battery picture light is great for portraits, artwork, diplomas, and sculptures. Cordless and easy to install. Batteries: Rechargeable Battery Pack (AC Adapter/Charger Included). Super bright LEDs designed specifically for art, pictures, and paintings ESM = 140 lum (20W equivalent) MAX = 560 Lum (60W equivalent).