Yes, but it may not be “wireless” in the sense you’re thinking.
A Holter monitor is a device used to check your heart’s electrical activity. It’s like the electrocardiogram (ECG) machine your doctor uses in the office, except you carry it with you on your belt or in your pocket for a few days (or even a month!).
A wireless Holter monitor still has those darn wires connecting the electrodes to the receiver. However, it uses wireless cellular technology to transmit data about your heart’s activity to your doctor’s office or a company that collects the information. Doctors typically use wireless Holter monitors for patients who may have infrequent bouts of AF and need to wear a monitor for several weeks.