The Digital EMS / TENS EM 49 belongs to the group of electrical stimulation devices. It includes three basic features that can be operated in combination: 1. Electrical stimulation of nerves (TENS) 2. Electrical stimulation of muscle tissue (EMS) 3. A caused by electrical signals massage effect. For this purpose, the device has two independent stimulation channels and four self-adhesive adhesive electrodes. It provides versatile applicable functions to increase the general well-feeling, to relieve pain, maintain physical fitness, relaxation, revitalization and muscle fatigue reduction. You can either choose from preset programs or set it yourself according to your needs.