Among the smallest, commercially available, high-res data loggers world-wide, the CATS Mini Diary (CMD) is, like its larger sister, a highly customizable sensor board. However, due to its extremely small form factor, it can be deployed on very small animals . It can be equipped with the sensors of your choice, whether pressure and GPS, compass or all together. It is ultra power-efficient and hence can be delivered from 6g upwards. In addition, the new CATS-Visualizer tool makes analysis much easier by letting you recreate all recorded sensor values graphically. Depending to its application the CMD too may need a customized float and attachment, which will, as always, specifically designed for you by us.