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Belifu 4 Channel Tens Unit Electro Muscle Stimulator, Fully Isolated with Independent 24 Modes, Rechargeable Pulse Massager with Electrodes Pads for Neck Back Arms Chronic Pain Relief Body Building sold2026 These connectors have a newBelifu 4 Channel Tens Unit Electro Muscle Stimulator, Fully Isolated with Independent 24 Modes, Rechargeable Pulse Massager with Electrodes Pads for Neck Back Arms Chronic Pain Relief Body Building Product Features Fully Isolated Dual Channels with Independent 24 Modes, 30 level Intensity and Time Control. You can operate it like two separate tens machines at once. For example, you are treating some pain around your shoulders. Youre also struggling