The Microfix is a portable and small PLB, a PLB is a personal locator beacon, an emergency device to get located and rescued in case of emergency.The PLB works transmitting a message in the 406Mhz frequency with a registered digital distress signal along with a 121.5MHZ SAR homing frequency. The signal can be picked up by satellites and transmited to a mission control center, the signal is then localized and a Search and rescue operation is organized. The SAR team use the 121.5mhz or the 406mhz signal to locate the PLB precisely.
As you can see a PLB is only to be used in real emergencies and not for any non-emergency purpose every time you activate the PLB a Search and Rescue operation will be organized spending time and money to save you.
Activation is easy, deploy the antenna to reveal on/off activation button and hold it for one second. The runtime is about 40 hours, more than enough to transmit the signal. The case is waterproof and built of highly resistant plastic to survive impacts.
For people that are frequently in risky locations or that need to work alone in the outdoors a PLB is the most effective way to get located and rescued in an emergency, some time ago PLBs were very bulky and expensive but today as we can see in this model they are getting to a very reasonable size. This unit is 1.25 x 5.81 x 2.31 in (3.71 x 14.75 x 5.8 cm) and weights 10oz (285gr) price is still expensive but this is a device that can certainly save your life.
You can read more at ACR's website.