【4 Output Channels - A/B Independent Control】This TENS machine supports 2 to 8 pads and has A (A1A2) and B (B1B2) independent output channels. This allows users to target different areas of the body at the same time and set different massage modes and intensity levels for each channel. The timer function can also be adjusted from 10 to 60 minutes.

【Relieve Pain Safely and Naturally - TENS Technology】This muscle stimulator uses TENS technology to deliver small electrical impulses that reduce pain, stiffness, and numbness in the back, arms, legs, shoulders, and feet. It activates the body's natural pain relief mechanisms and stimulates the production of natural pain relief substances.

【24 Massage Modes and 20 Intensity Levels】This muscle stimulator has 24 pre-programmed massage modes, including Palm, Blend, Push, Press, Kneading, Tapping, and more. There are 20 intensity levels to choose from, making it suitable for both chronic and acute pain relief. It's recommended for laborers, seniors, office workers, housewives, overworked individuals, fitness enthusiasts, and parents.

【Easy to Use and Portable】The TENS machine features a large display that makes it easy to choose pre-programmed settings and view output channels, time, and intensity levels at a glance. It's compact, lightweight, and portable, making it easy to use at home, at work, or while traveling. A single charge lasts up to 20 hours.

【16 High-Quality TENS Unit Pads - Safe and Gentle on Skin】Our electrode pads are made of industrial-grade materials and are self-stick, easy to apply, and gentle on skin. They can be reused multiple times and are compatible with most snap-on type connectors.