About Arca
We built Arca because TENS devices were overdue a rethink.
Most TENS units treat one area at a time. You have a bad back and a stiff neck. You end up shuffling pads between sessions, losing your settings, fighting a tangle of wires. It is frustrating when you are already in pain.
Arca is different. It is a wireless dual-zone TENS device that treats your neck and lower back at the same time — two independent channels, one quiet device. You can finish the email, sit through the meeting, or get through the commute while it works.
The technology
TENS — transcutaneous electrical nerve stimulation — is recognised by the NHS as a method of pain relief. It works by sending gentle electrical signals through the skin that interrupt the pain signal before it reaches the brain. It also triggers the body's own endorphin response.
It is not new. It has been used in physiotherapy clinics for decades. Arca brings that technology into a device small enough to sit in a coat pocket.
- UKCA and CE certified
- MHRA registered — Class IIa medical device
- 98g — lighter than most smartphones
- 10-hour battery
- 6 modes: TENS and EMS
Who it is for
Arca is built for people who have been in pain long enough to be sceptical. People who have tried heat patches, ibuprofen, and foam rollers. People who are not sure any device will actually help.
We are not going to promise a cure. We are going to offer a 60-day trial. If Arca does not make a real difference to your pain, you return it for a full refund — no awkward process, no pressure.
Made and shipped from the UK
Arca is a UK brand. We ship from Bristol, usually same day. Our support team is based in the UK and responds within one working day.
If you have questions about whether Arca is right for you — your condition, your lifestyle, whether the pads will work on your skin — ask us. We will give you a straight answer.