Silver Sport Full Reclining WC w ELR 18 Detach Full Arms CPAP Accessories warrants that the Portable Oxygen 10883 warrants that the Portable Oxygen Concentrator POC (the Product) will be free of defects in workmanship and or material for the following period: Portable Oxygen Concentrator five (5) years from date of shipment * Battery 1 year from date of shipment what is there to hear underwater anyway * Standard dual axle provides easy transition of seat to hemi level * Carbon Steel frame with triple coated chrome for an attractive chip proof maintainable finish * Double embossed vinyl upholstery is durable light weight attractive and easy to clean * Urethane tires mounted on composite wheel provides durability and low maintenance * Aluminum footplates * Comes with padded detachable full arms * No maintenance sealed precision bearings * 8 front casters adjustable in 3 positions * Chrome hand rims standard * Comes with push to lock wheel locks * Overall width: 29 (open) 13 5 (closed) * Overall height: 36 * Seat to floor height: 17