Battery Powered Wheelchair Cushion- Alternating pressure seat cushion- Foam-molded seat cushion with 6 TPU cells- Bi-elastic PES / PU cover with all-round zip, anti-slip surface- Control Unit- Alternating pressure control unit with lithium polymer battery- Sensor-controlled, 3 time cycles 10/15/20 min.- Static mode- Off-grid operation up to 36 hours- Low pressure alarm (acoustic and visual)