Reliable  piston-driven compressor * Colorful & child-friendly * 5 year limited warranty * Designed to meet the requirements of HCPCS Code: E0570 * The John Bunn Neb-u-Tyke RR Nebulizer comes complete with: 1 reusable nebulizer  1 adult mask  1 pediatric mask  1 mouthpiece  1 PVC tubing  & 3 spare filters *