Pepper EMS Training System

The Pepper EMS Training System is a battery-powered muscle stimulator that uses electrical muscle stimulation (EMS) technology to stimulate healthy muscles and improve muscle performance in adults. It is an over-the-counter device intended for muscle conditioning and training, not for treating medical diseases or conditions. The system consists of a wearable suit with embedded electrodes and a battery box that communicates wirelessly with a smartphone app.

The device has 16 output channels (vs. 13 in the predicate), a smaller and lighter battery box (102×22mm, 152g vs. 148×78mm plus connectors, 248g), lower maximum output voltage and current, and a more restricted maximum program duration of 25 minutes vs. 60 minutes. It offers only three training programs (Cardio, Strength, Relax) which are a subset of the predicate's programs. All electrical parameters, waveforms, and safety features are equivalent or more conservative than the predicate device.

AAMI/ANSI ES60601-1, IEC 60601-1-2, IEC 60601-2-10, IEC 62133 (battery safety), ISO 14971 (risk management), ISO 10993-5 and ISO 10993-10 (biocompatibility), and IEC 60601-1-6 (usability). Engineering bench testing followed FDA's 1999 Guidance Document for Powered Muscle Stimulator 510(k)s. Software was validated per FDA's General Principles of Software Validation.

The Pepper EMS Training System is substantially equivalent because it shares identical indications for use, target population, output mode, waveform shape, and key electrical characteristics (net charge, burst duration, duty cycle) with the predicate Katalyst Training System. All design differences—such as the one-piece suit design, fewer/more conservative electrical parameters, additional channels, and smaller form factor—either do not affect the fundamental intended function or improve safety margins without introducing new risks. Both devices comply with the same core standards (IEC 60601-1, IEC 60601-2-10, IEC 62133), and all differences are within acceptable design variations for this device class.