Intelligent Neck Massager – TENS Therapy with HeatIntelligent Neck Massager TENS Therapy with Heat Relieve neck and shoulder pain anytime with the Intelligent Neck Massager. Using low frequency electrical impulses combined with TENS (Transcutaneous Electrical Nerve Stimulation) technology, it targets deep tissues (35 cm below the skin) to soothe stiffness, ease knots, and improve circulation. Ideal for daily stress relief, arthritis discomfort, cervical strain, and tension headaches. Weighing just