The Pocket-Spiro® BT100 is a high precision spirometer designed for ambulant respiratory mechanics analyze.It can be upgraded with many options like: MIP/MEP, Sniff, Rocc, Rhinomanometry, compliance, Inductive plethysmography (RIP) , EtCO2, Nasal Air Flow, etc..  Connect it with Bluetooth to your computer or PDA  and let the PDI software store, analyse and print all your results