Digital device for monitoring eggs. Used, but only a few times. Embryo development can be confirmed with a light, but further confirmation is not possible. With this machine, you can check the heart rate to determine if eggs that have passed their hatching date are viable or not. It's common to dispose of eggs after the hatching date, only to find they were still alive when cracked open. Initial light detection only determines if the egg is fertilized or not. Further confirmation of fertilized eggs is not possible with a light. This can be a big deal, especially with the eggs of rare creatures. Can also be used for reptiles, but reptiles do not turn their eggs. Therefore, please mark the eggs. Mark the top, and return the egg so the mark is on top after inspection. The orientation of reptile eggs is determined within a few hours after laying. The area that supplies oxygen becomes fixed, so changing the orientation will cause suffocation. You can inspect any egg that fits in the case. - Model Name: Buddy Digital Egg Monitor - Brand: Avitronics - Function: Egg monitoring function - Included: Main unit, sensor Thank you for viewing.