Oxygen M6 Tank w Toggle 170 liters (15 H) Group Activity Units It helps to set 10883 It helps to set exercise goals and push for them by recording real time stats of steps Latex free * The Tycos 767 Wall and Mobile Aneroids offer all the dependability and accuracy of our classic aneroids along with an updated look * Precision jewelled movement manometer that is certified to be accurate within one percent of scale (Ò3mmHg) * Laser engraved dial face for precision calibration * Built in basket for securely storing the inflation system * High impact housing and bezel to protect the movement and crystal * Large dial face (6 1 4 ) and bright orange pointer for easy reading * 40¯ side to side swivel for clear viewing at all angles *Lifetime calibration and manufacturing warranty * With Toggle Post Valve (Easy to turn on off manually) * M6 Tank 170 Liters *