This is the clinically proven, non-invasive device that creates electromagnetic pulses without heat or vibration to ease back pain. Advanced shortwave therapy reaches deeply into soft tissue for quiet, effective relief; there are no uncomfortable or annoying sensations to interfere with daily activities. A clinical study showed that 70 patients reported an average of 40% less pain after wearing the device after seven days. Safe for continuous use with arthritis and musculo-skeletal pain. Fits discreetly under clothing and portable for soothing relief at the home, office, or on the road. Provides 720 hours of use; convenient on/off switch. Black. 41" L x 4" W; expands to 52" L.