Valdler Purple Quiet Sweeping Seconds Wall Clock 12 Inch 1.Not all batteries are created equal,please use carbon zinc batteries only. voltage:1.5V.For examples: panasonic voltage:1.5V 2.DO NOT USE heavy duty, alkaline battery,rechargeable batteries.These batteries are not recommended due to fluctuations in the way these types of batteries disperse power.For example:Duracell alkaline battery. 3.This plastic-framed wall clock measures 12 inches in diameter.Large Arabic Numerals and glass front cover guarantee good view. 4.Super-quality Quartz Sweep Movement guarantees accurate time and absolutely quiet environment;Plastic Case And Lens, makes it easy to clean and keeps dust away from dial. 5.Free One AA Carbon Zinc Batteries and Wall clock hook in the solid Valdler packing box.A Wall Clock looks most at home hanging in an office.