Santamedical Electronic Pulse Massager LFM-110 with 6 Modes is portable due to its small and light weight design. The device is controlled by a micro-computer and it is used by a number of areas in the body such as the neck, shoulders, arms, low back, back, legs, joints, feet, etc. The massager is used for relieving the numbness and pain in stiff neck, stretched or over-exercised muscles, chronic condition numbness, and the carpal tunnel syndrome. The massager is perfect for prevention the muscle atrophy. You can select the six auto modes and three selectable massages along with stimulation of high frequency in order to relieve pain.