Real-time clock can be set and displayed. Automatic shutdown when there is no operation within two minutes. Performance Display mode: 2.8'' LCD Volume range: 0 10 L Volume accuracy: ± 3 % or ± 0.05 L (whichever is greater) Flow range: 0 L/s 16 L/s Flow accuracy: ± 5 % or ± 0.2 L/s (whichever is greater) Working current: 200 mA Power supply: rechargeable lithium battery Safety class: internally powered equipment, type BF applied part.Accessories One User Manual One USB cable One mouthpiece (disposable accessory) One nose clip (optional) One power adapter (optional) One PC software. Physical characteristic Dimension: 160 mm (L) × 65 mm (W)× 45 mm (H) Weight: 190 g. Food and Drug Administration and state and local regulatory agencies. If you have a defective item, you want to return or discount. Or replace item for you. These charges are buyers' responsibility. ECG / ECG holter EEG / EEG Holter B-ultrasound. Patient Monitor Fetal doppler Fetal Monitor. Spo2 Monitor Stethoscope Medical Image... We are look for partners in the world now! Do you want to become our agent in you conutry? Contecliya # hotmail dot com. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical & Lab Equipment, Devices\Spirometers & Peak Flow Meters". The seller is "tialiy0" and is located in this country: CN. This item can be shipped worldwide.