Fangrui Product Details Small Digital Wall Clock With Large Numbers - Led Wall Clock Has 2.7 Inch Large Numbers. Huge Digital Display That Makes It Easy To Read The Time From Across The Room. It Is Very Suitable For The Elderly, Elderly Or People With Poor Eyesight As It Can Clearly Show The Time. Two Power Modes - Powered By Plug-in Or 3 Aaa Batteries (not Included). In Battery Powered Mode, The Clock Features Voice Control. When You Make Some Kind Of Sound Or Click On The Clock, The Screen Automatically Light Up To Show The Time For 10 Seconds To Save Power. 3-level Brightness Adjustable - The Led Digital Clock Is Equipped With A 3-level Brightness Display. The Wall Clock Is Also Equipped With A Night Mode, Which Can Adjust The Low Brightness From 22:00-06:00, Save Energy, Protect The Environment, And Create A Comfortable Sleeping Environment . Two Display Modes-big Digital And Small Wall Clock Provides 2 Display Modes To Choose From, One Only Displays Time And Day Of The Week; The Other Is Time, Week, Date, Temperature Cycle Designed For Modern Living