This Homedics IFR-SHL300H-WW Comfort Neck & Shoulder Vibration Massager is perfect for anyone dealing with everyday neck and shoulder tension. Its triple-core LED technology combines red light and near-infrared therapy for soothing relief at different levels. Red light works near the skin's surface, helping tired muscles relax and unwind after a long day at work or on the go. Near-infrared light reaches deeper into muscles and joints to support you after exercise, lifting or everyday activity. 15-minute auto shut-offCustomisable soothing heat settingsIncludes rechargeable power packUp to 1.3 hours of battery lifeButton controlCordless