- Intermittent non-conducted P waves without progressive prolongation of the PR interval (compare this to Mobitz I).
- The PR interval in the conducted beats remains constant.
- The P waves ‘march through’ at a constant rate.
- The RR interval surrounding the dropped beat(s) is an exact multiple of the preceding RR interval (e.g. double the preceding RR interval for a single dropped beat, treble for two dropped beats, etc).