The M is the wearable device - microcurrent, imperceptible, running up to 10 hours at a time. The Bio Belt does away with gel pads entirely, wrapping around the torso or a limb, which suits the M's all-day approach better than adhesive pads do.

Together they cover larger areas like the lower back, hips and thighs without anything to stick on or replace. The Perfect Conductor spray works well with the belt if the sensation feels uneven.

Everything included is matched to the device, and comes in for less than buying each piece separately.