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). Please note that actual battery life depending on the battery's capacity, environmental conditions, and usage habits. Elegant Design: Silver color frame makes it the perfect decorative wall clock for office, living room, classroom, bedroom, bathroom. Unlike other using cardboard as clock background that easy damaged in moisture and wet season, this clock back base are made of solid plastic, therefore remain well function and dry in any weather condition. Super Silent Mechanism: Precise quartz sweep movement guarantees accurate time and absolutely quiet environment. Simple style suitable for bedroom, kitchen, classroom, dining room, meeting room or any other places which needs a silent environment. Easy to Read: Contemporary style clock with large raised silver numbers are clear to read, front glass cover guarantees perfect view and keeps dust away from dial. Easy to Hang: Designed with a hook and wide slot at the back, this wall clock ensures a hassle-free installation process, allowing you to effortlessly mount it on any desired wall. silent wall clock