The re-issued AB1 Braun Clock in black is a simple pure modern design. This Alarm Clock is great for both travel and home. Quartz controlled battery alarm clock. Easy to read dial and operates on a single battery. Parts of the Braun travel alarm clock are made from various locations around the world but all Braun clocks still use the precision German movements that are known for their high accuracy and silent movement. The clock requires 1 AA battery which is included.