< . : , r, r: >: > is a device that measures pressure change signals related to abdominal respiration. Use standard Bluetooth to communicate with computers, mobile phones and other devices. Upload respiratory waveform data. Respiration waveform output.
< : , r, r: >* Bluetooth.communication.
*Lithium battery powered, rechargeable.
*Automatic adjustment of amplitude.
*Battery power is reported automatically.