How is a wireless TENS unit different from a wired one?

The control unit snaps directly onto the electrode pads, so there are no lead wires between the device and your skin. That makes it easier to wear under clothing and move around during a session.

Do the pads need replacing?

Yes. Electrode pads lose their adhesive over time, typically after a few dozen uses, and must be replaced. The device itself uses standard snap-connection pads.

Can I use it on my back and shoulders?

Yes, the two pads can be placed on most muscle groups, including the back, shoulders, arms and legs. With only two pads you treat one area at a time.

How long does the battery last?

The rechargeable battery typically covers several treatment sessions per charge, depending on intensity and program used. It charges over USB.

Is it safe for everyone?

No. People with pacemakers or implanted electronics, pregnant women and those with certain conditions should not use TENS. Check with a doctor first if you are unsure.