IMMEDIATE PAIN RELIEF: with 8 preset and targeted programmes. The Perfect TENS is easy to use device that utilises clinically proven TENS technology. Helping to relieve chronic, acute and musculoskeletal pains such as: arthritis, back pains and sciatica TREATMENT AREA: with 4 electrodes to treat multiple areas or a larger area. You'll easily be able to treat an area of pain, whether that be: arm, leg, body pain - helping to relieve chronic and acute pains. Includes a sock to help reduce the effects of arthritis, including swelling VARIETY OF PAIN RELIEF PROGRAMMES: with 8 clinically designed preset programmes and 1 manual programme. It will be quick and easy to find the pain relief you need that targets your specific pains. A Manual programme even allows you to choose specific parameters meaning you can creates your own tailored made programme to use again and again YOUR SAFETY IN MIND: your safety is paramount and thats why Perfect TENS has open circuit detection. This means if the machine senses a break between the skin and electrode, the unit's intensity will return to 0. this is to avoid any nasty shocks, giving you peace of mind when using Perfect TENS USE EVERYWHERE: the Perfect TENS comes with a belt clip allowing you to have discreet and noiseless pain relief where ever you may need it, using a handy belt clip to attach it to your clothing. So, whether you are experiencing pain at home or at work, you can easily relieve any aches and pains you may have KNEESTIM: this Perfect TENS combination kit includes an additional kneestim that can help reduce the effect of arthritis, pain and swelling in the knee