Bittium Oyj specializes in advanced radio communication technologies and biosignal processing. The company operates through three main business segments: Defense & Security, Medical Technologies, and Engineering Services. Its Defense & Security division, which generates the majority of its revenue, provides tactical communication systems, military radios, and highly secure mobile devices for defense and public safety authorities. The Medical Technologies segment offers biosignal monitoring solutions for cardiology and neurophysiology, including Holter monitors and home sleep apnea testing devices. Additionally, Bittium provides R&D and engineering services for wireless and IoT applications. The company's strong focus on information security and reliable connectivity in demanding environments forms its core competitive advantage.