Features: High Accurate: Handheld blowing alcohol tester, built-in high-sensing chip, intelligent chemical sensor, measurement is more accurate. Non-Contact: Direct blowing detection, no need to install a mouthpiece, to avoid the growth of bacteria in the blowpipe, and the measurement is safer. Fast Reading: Intelligent detection, with three-level indicator light, the detection result is clear at a glance. LED high-contrast screen display, accurate reading, with Chinese/American standard units. Portable & Rechargeable: Mini and compact, easy to carry. Built-in high-capacity rechargeable battery, it can be used 300 times with a full charge. Easy to Use: You only need to slide down and blow to perform detection, which is very convenient. When not in use, slide upward to close the air inlet, which effectively prevents dust and prolongs its service life. Specifications: Color: Silver/ Black(optional) Material: ABS Display: Digital LED Voltage: 5V, 1A Battery: Built-in 200mAh Lithium Battery Accuracy: 0.1G/L & 0.01%BAC Item Size: 100 * 27 * 14mm/ 3.9 * 1.1 * 0.5in Package Size: 140 * 80 * 40mm/ 5.5 * 3.1 * 1.6in Package Weight: 120g/ 4.2oz Packing List: 1 * Breathalyzer 1 * USB Cable 1 * User' Manual