LBER New Spirometer Bluetooth Mobile Phone Data Recording Resistance Gear Suitable For Children And Adults Lung Training _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ LBER New Spirometer Bluetooth Mobile Phone Data Recording Resistance Gear Suitable For Children And Adults Lung Training _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Colour:Black Material:Aluminum alloy + plastic Package Contents: 1 x Lung muscle trainer 1 x Data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_