Our rechargeable picture lights have a built-in 5000mAh battery, lasting over 12 hours and charging in just 4 hours. Features USB charging and magnet adsorption for easy removal and charging. Each LED lamp bead in our painting lamp has a separate trapezoidal focusing groove for enhanced light effect with minimal power loss. This design ensures linear light distribution on the wall, perfect for paintings and dcor. Offering 3 lighting modes (white/warm/natural light) and adjustable brightness from 10-100%, our battery operated wall lamps also features timer and memory function to preserve the last used settings for added convenience. - Harper Living Men's Picture light for Wall Antique Brass, Magnetic Battery-Operated Wall Lights in Gold