Sizes vary widely across models. Heights range from about 3 inches up to 18.11 inches, widths from about 2.91 inches up to 17.7 inches, and depths from about 2 inches up to 17.7 inches.
Most clocks include a built-in hanging hole on the back; some models ship with supplied hooks and nails for secure mounting. Pendulum-style clocks typically use simple pendulum attachments that clip onto a hook or attach after removing the back cover.
Typical controls include on-the-hour activation, light sensors that silence melodies in the dark, demonstration or on/off buttons, and volume controls. Some models also include scheduled nighttime muting.
Styles range from industrial/steampunk gear designs and musical/motion clocks to rustic or vintage grandfather-style pendulums, nature-themed singing-bird clocks, and novelty or modern character clocks.