Automatic watch in slow motion

Hi-speed video of my Tissot Ballade III Automatic watch ticking in slow-motion. Original video was recorded at 100fps, this is played back at 10fps. Note that the second hand does not actually "sweep", rather, it ticks 8 times per second. This matches the frequency of the internal movement of the watch, which runs at 4 Hz or 28 800 beats per hour (bph)