1. Material: ABS 2. Measuring range: 0-400mg 100ml 3. Measurement object: 0-400mg 100ml 4. Measurement accuracy: 1mg 100ml BAC 5. Resolution: 1mg 100ml BAC 6. Voltage: 3.7V 7. Power supply: 220V 8. Power supply: 3000mAh 9. Warm-up time: 5 seconds 10. Response time: 5 seconds 11. The air inlet is waterproof and dustproof, increasing the service life 12. USB interface design, can be connected to a computer to transfer data or charge 13. Semiconductor sensor, the test is more sensitive and accurate, the processor is more stable, and the response is faster 14. The motor is used for circulating air, and it can be sampled and analyzed just by being close to the air. 15. LCD display, clearer detection at night 16. The bottom has a magnetic adsorption, which can be firmly placed on the metal 17. Dimensions: 340x51x5.5mm 18. Weight: 0.32kg