The Philips Respironics Optichamber Diamond Spacer is smaller than most conventional spacers and incorporates a stepped mouthpiece, a clear anti-static chamber, and a low resistance expiratory valve that helps measure breath count and breath hold.
Low-resistance valves let you breathe easily through the chamber
can be used by both children and adults
built-in whistle lets you know if you are breathing too fast
is made from anti-static material and is easily disassembled for cleaning