Features: - Dual-channel TENS & EMS device for pain relief and muscle relaxation, suitable for two users or different areas. - 12 massage modes with 40 adjustable intensity levels to meet various needs. - Clear LCD display showing current mode, intensity, and timer settings. - Adjustable timer (5-90 minutes) with mute/buzzing sound option. - Compact, portable design with belt clip. Specifications: - Material: ABS - Channels: 2 - Power: DC 4.5V (3x AAA batteries, not included) - Waveform: Bidirectional - Modes: 12 - Intensity levels: 0-40 - Frequency: 1-120Hz - Pulse width: 100-250��s - Voltage: 40V��20% - Operating conditions: 5-40��C (41-104��F), 15-93% RH - Storage conditions: -25-70��C (-13-158��F), 15-93% RH - Size: 137x67x20mm (5.39x2.64x0.79in) - Weight: 74.4g (2.62oz, host only) Package includes: 1x TENS & EMS device 4x electrode pads 2x electrode cables 1x user manual