Detector Pro UniProbe - Headphones and Pulse Induction Probe (Multiple Detector Options)The New UniProbe! The UniProbe is a combination of high quality headphones and a deep seeking pulse induction probe. Here are some of the features you will notice right away: Excellent depth. 2 4 is common on coin size targets. Most of the time, when you open your plug, youll be able to hear the target right away. Instant switching between hearing your metal detector and probe. No probe buttons to push, waiting for your probe to go ON, or moving your