The Cefar Basic TENS Machine is a versatile pain relief stimulator designed to meet all your essential needs. With its Cefar Easy Touch automatic adjustment feature, the device intuitively adjusts intensity levels, making it simple and convenient to use. The backlit screen ensures easy reading in any lighting condition, while the pause function and program lock provide added convenience and safety. The key lock compliance feature prevents accidental changes, and the self-check function ensures reliable performance. Compact and portable, this TENS machine is perfect for on-the-go pain management. It's user-friendly and includes everything you need to get started. Included Items: One Cefar Basic TENS device One set of lead wires (2 pieces) One set of cloth dura-stik 5cm x 5cm (2" x 2") square electrodes One neck strap Four rechargeable batteries One charger One black bag One instruction manual Indications: Muscle pain relief Chronic back pain relief Tension headache treatment Knee pain relief Reduction of spasms Neck pain management Product Specifications Number of Channels 2 Numbers of Programs 3 Preset Constant Current Up to a resistance of Max 1500 Ohm/channel Maximum Amplitude 60 mA Intensity Increments Min. 0.5 mA Frequency 80 Hz Power Source 2 x 1.5V AA Weight 180g, including battery Electrical Safety Class Class II, Type BF Warranty 3 yrs