A neuromuscular electrostimulation device, powered by OnPulse technology, that increases blood flow for the promotion of wound healing and the reduction of oedema and pain. The disposable battery-powered device is the size of a wristwatch and worn at the knee. It gently stimulates the common peroneal nerve, activating the calf and foot muscle pumps, resulting in increased venous arterial and microcirculatory blood flow.