Never used] Breathing Exercise Device Lung Spirometer, Safe Incentive Spirometer for Breathing Training

Product never used, packaging damaged during transport. Unopened product, repackaged in our warehouses, in perfect working condition, warranty available. Feature: 1. Safe and comfortable PE material of the breathing mouth, with ergonomic design for reliable and safe use. 2. The bottom filter can effectively prevent cross-infection and keep the ball clean, care for your health. 3. Volumetric measurements up to 3000ml can achieve optimal vital capacity and restore interrupted breathing patterns. 4. Pipeline with good bending resistance, not affected by the patient's position, easy to clean and durable. 5. Bright color ball shape design integrated with color psychology, encourage patient training.