It chimes the hours out and then the 5 minute intervals. For example at 3:58 it chimes three times for the 3 hours and then 11 double chimes for the 55 minutes. It does not chime the quarters and then the minutes like a full minute repeater.
By: Chicolini : August 2nd, 2020-17:54
I have a hearing loss (which saves me a lot of money) and can not hear most repeaters but this one I can. It chimes well and on the louder side.
That makes this 5 minute repeater somewhat a bargain. and I noticed that the tugs are quite short and curved so 42mm might even be wearable on my small wrist