Teethers; Cosmetic apparatus using ultrasound for performing aesthetic skin treatment procedures; Electrical stimulation apparatus for nerves, muscles and skin for physical therapy, rehabilitative and pain management purposes; Electronic aesthetic skin treatment devices using light emitting diodes, namely, infrared, red, orange, yellow, green, and blue wavelengths for generating light rays; Electronic light therapy apparatus for the skin; Electrotherapy devices for providing transcutaneous electrical nerve stimulation, infrared heat and compression; Electrotherapy stimulation apparatus comprising electrical nerve and muscle stimulators, transmitting pads and electrodes for use with horses and dogs; Lasers for the cosmetic treatment of the face and skin; Light-based medical devices, namely, a light emitting diode (LED) device for increasing the human body's own production of collagen; Massaging apparatus for personal use; Portable medical devices used for breathing exercises, namely, portable devices used for endogenous breathing exercises and for respiratory muscle training