Compact Quartz Metronome from Wittner
This metronome has a large dial for tempo selection 40 to 208 beats per minute (accurately clicks into position). Choose from light only or a combination of light and sound indicators. It features a 440-tone generation for tuning. Earphone included. This compact metronome measures only 2-1/2" wide x 3-3/4" high x 1-1/4" deep. Requires a 9-volt battery (not included).