Hometime Round Glass Wall Clock - Dart Board, Christmas, Birthday, Any Occasion Gift Hometime Round Glass Wall Clock - Dart Board This decorative glass wall clock makes a great addition to any home, Especially suitable for a friend or relative who loves to play darts! ! Clock face has a 30cm / 12" diameter face. Clock is battery operated and requires 1 x AA battery (not supplied). Supplied in a rigid cardboard box.