Sat406 (Mobit Telecom) develops wearable satellite personal locator beacons (PLBs) for search and rescue applications. Their flagship product is a wrist-worn PLB that transmits distress signals via the Cospas‑Sarsat network and integrates enhanced geolocation features using patented SINSIN technology, which improves position accuracy independent of GNSS reception The company’s hardware platform includes the compact SAR406 IC, designed for low power consumption and optimized size. Sat406 devices support emergency alerts via 406 MHz satellite signals and a VHF DSC radio link for nearby responders. The system is built to operate reliably under challenging environmental conditions and comply with international SAR protocols.