Features: 1. The breath alcohol tester uses an advanced nano-semiconductor alcohol sensor to quickly and accurately detect alcohol breath 2. Detection range: 0.000 - 0.20% bin 0.0 -1.9 g/l 3. Precision : 0.05% + / - -10% bac 4. Battery saving design, low voltage indication 5. Direct LCD display of test value 6. Audible and visual warnings exceed preset limits 7. Preset limit: 0.05% alcohol 8. Working time: 15-30S warm-up, reaction time and lt; 5s, automatic shutdown: about 1 minute 9. Battery : 1.5V AAAx2 (not included) Brand new aftermarket breath alcohol tester mouthpiece. Made of high quality plastic material, safe to use. Easily removable, washable and reusable . Makes testing for your friends and family easy and sanitary. Digital Alcohol Tester An instrument that analyzes blood alcohol concentration anytime and anywhere Tester Non-contact use, no need to accompany mouth breathing, more convenient to use Breathalyzer alcohol test: with battery saving design and low voltage indication Delivery quantity: 1 piece