Product description QRTTLY Precautions for oxygen injection auxiliary instrument read the instructions carefully use to safe and use of this product1. The used by the must be water-based ( with high viscous concentration must be diluted with mineral water)2. Spray warm water or alcohol use (clean the inner wall of the )3. After each use, you must inject warm water to clean again, and spray the air for a few seconds (to avoid clogging or leakage due to condensation) and put the product into the ).4. 't stay in the for too long. How much should this contain to avoid clogging or leakage of product due to condensation)5. Receive a fully instrument and reuse it. Displays red and green when charging.6. Do not use it while charging, unplug the and use it again.Colour: redMaterial: metal + plasticSize: 22x15x4.5cmPackage Contents:2 * plastic 1 * oxygen injector1 * USB cordOnly the above package content, other are not included.Note: Light and different displays may the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm. Ingredients metal + plastic