Coccyx Cushion Foam 18 x16 x4 Navy Instrument Trays Certificate: FCC 7344301 Certificate: FCC 5 has an advanced operating system that ensures a complete range of therapy no matter where you use it * Two separate timers to treat two areas patients at once or one larger area * STIM indicator light for precise intensity control * Four channels of electrical stimulation output * Large easy to read graphical LCD display with exact dial performance and programmable timer * Waveforms include TENS EMS 2 Pole Interferential 4 Pole Interferential and Russian * 10 presets per waveform totaling 50 presets (plus professional mode) * Preset protocols as well as customized user defined protocols * Designed for tabletop therapy cart or mobile use * Includes eight sets of electrodes eight sets of rubber electrodes with sponges four elastic straps four sets of lead wires two connector cables power cord and user manual with preset protocol guide * Product dimensions: 10 Navy * 18 W x 16 D x 4 * Custom sizes available * Optional solid seat inserts available ($8 75 Up Charge) * Relieves pressure at the sacral area while offering patient s comfort and even distribution of weight throughout the cushion * Medium density fire retardant foam is covered in either a poly cotton in your choice of black navy or gray medical grade vinyl