The PL009B Penguin Electronic Pulse Tens Ems is a portable, battery-powered, Micro-current therapy device effectively alleviates muscle pain and tension. It is designed for convenience and versatility.This device offers three operational modes, delivering electrical pulses through electrode pads placed on the skin to provide a soothing body massage.It features easy-to-use On/Off and intensity adjustment keys with 16 levels, allowing users to customize their experience.Penguin Tens and Ems may help temporarily relieve pain associated with sore and aching muscles in the shoulders, waist, back, neck, arms, and legs due to strain from exercise or regular household activities.