Here are 3 views of this wretched thing. It has a black button that makes the loudspeaker emit a ping and a red button that stops the clock. There's a trimmer capacitor adjustment, a volume control, and a setting knob. I have been trying without success to set up and synchronize the chime, time and strike. It chimes the quarters, and I have repaired the bogus pendulum's suspension spring. There seems to be no source for a manual, and no model number either. Has anyone had experience with these? There's no indication that this is a mechanically-switched trigger movement. Time runs fine, and occasionally the sounds come to life when you fool with the buttons enough. Oh: the other picture is from a mercury refinery in Spain. If you sit in a meters-deep vat of liquid Hg you won't sink, as demonstrated here. The picture was in amongst my clock photographs, so I included it for no reason.