Built-in Manometer avoids misplacement or accidental detachment during use. 360' swivel body with manometer allows the best and most comfortable viewing position. Color-coded ranges for easier viewing from all angles. Two-plane 360' swivel on paitent connection elbow for maximum flexibility. Smooth circular adjustable exhalation port valve for ease to control pressure level with one hand. Ultra-thin, kink-free oxygen tubing reduces the weight of the device. Built-in swivel design and suction port for suction without disengagement of the hyperinflation system from the patient. Soft breathing bag with the lung compliance touch.