Upgraded Movement: Compatible with alkaline battery, with a battery life of over 2 years (tested under AA Alkaline High Performance Batteries 1.5V). Requires 1 AA Battery for the clock (not included). Elegant Design: Cerulean color frame makes it the perfect decorative wall clock for office, living room, classroom, bedroom, bathroom. Unlike others using cardboard as clock background that is easily damaged in moisture and wet season, this clock back base is made of solid plastic, therefore remains well-functioning and dry in any weather condition. Super Silent Mechanism: Precise quartz sweep movement ensures accurate time and an absolutely quiet environment. Simple style suitable for bedroom, kitchen, classroom, dining room, meeting room, or any other places which need a silent environment.