Used only about 6 times Taiwanese Tennis Device 4 Channels Model EV-906 Available The EV-906 device is an experimental electrical nerve and muscle stimulator based on TENS (Transcutaneous Electrical Nerve Stimulation) and EMS (Electrical Muscle Stimulation) technologies, used to relieve pain and improve muscle function in a non-pharmacological and safe way. TENS works by sending mild electrical pulses through adhesive electrodes on the skin surface, which helps to: Inhibit pain signals sent to the brain Stimulate the release of endorphins (the body's natural painkillers) Relieve acute and chronic pain in targeted areas such as the back, neck, joints, and muscles EMS works on: Direct muscle activation Improve muscle strength and coordination Support recovery after injuries or exercise Prevent muscle atrophy due to immobility The EV-906 device has four independent stimulation channels, allowing the use of multiple adhesive electrodes simultaneously, enabling: Treatment of more than one area in a single session Adjusting intensity levels and programs according to the patient's needs Precise customization of treatment for painful muscles or nerves Additional medical features: Suitable for treating spinal, neck, shoulder, and knee pain Can be used in physical therapy, sports rehabilitation, or safe home use Helps improve blood circulation and reduce muscle spasms Safe when used according to the instructions of a doctor or physical therapist