Sell Spirometer for Lung Exercise best price

Features : To calculate inhaled/exhaled air volume multiply column volume to retention time. Directions : 1. Please take out Lungsicer from the duplex box and connect the tube at the base. (Outlet Connector) of Lungciser 2. Place the Lungciser in vertical position. Exhale & Place the mouthpiece connector between both lips. 3. Inhale throughly until lifting the all three coloured balls (try if possible) 4. Remove the mouthpiece and exhale, relax for a while 5. Repeat the process. Safety warning : Do not use if package is damaged Store in cool & dry place Manufacturing date : 03-2021 Expiry date : February 2026 What's in the box : 1xSpirometer Lung Exerciser