Features 1、1.【Healthier and More Hygienic】This blood alcohol meter does not require lip contact, just blow it directly into the mouthpiece. Press the switch and blow directly into the tester, without lips and without touching the breathalyzer. 2、2.【Portable Mini Respirator】Portable respirator is mini size, small size, easy to carry, can fit into a pocket or purse or other small space, perfect for weddings, parties, celebrations, and other social events. 3、3.【Sensor Technology】Adopting advanced sensor technology, it can provide you with accurate and reliable results in a few seconds, one-key operation, easy to use, just press the switch. 4、4.【Font Accuracy】Blow for 5-10 seconds, the result is ready in seconds and displayed on the LED screen for 10 seconds. 5、5.【Automatic power-off design】Automatic power-off design, energy-saving. The digital alcohol tester with a voice prompt is more intuitive and convenient. Specification Battery type: 2*AAA (not included) Sensor: Advanced Semiconductor Oxide Alcohol Sensor Range: 0.000% -0.199% BAC (0.00-1.9g/L) Accuracy: ±0.01%BAC Warm-up time: 10s Response time: <5s Display: LCD display Size: 9.5*3.5*1.3cm/3.7*1.4*0.5inch Packing weight: about 36g Package List 1 * Alcohol Tester 1 * Sling 1 * English Manual