Usage Tips:Features: 1. High accuracy and sensitivity. This is a small and portable breathable analyzer that can accurately analyze the alcohol in the body after drinking water. It can be used at home, parties, work, birthday gifts for family and friends. 2. Energy saving and fast charging. Using Type-C fast charging interface and 500mah high-capacity lithium battery can be used for up to 5 months after charging. 3. Carry the indicator light, the result is clear at a glance: The first one is the charging indicator light. The second is the alcohol indicator green light to indicate safety, and the third is the red indicator for alcohol exceeding the standard. 4. Multiple security alerts. LED display, indicator light (green: 0-19mg/100ml, screen will show "Caution": 20-49mg/100ml, red: 50-100mg/100ml) and drinking alert. 5. Safer and healthier. Using the cleaning technology of the machine room, non-connected no blowing nozzles. Specification: Material: ABS Size: 183x42mm Color: blue Type: breath alcohol detector Battery capacity: 500mAh Language: Japanese, English PackageList: 1xAlcohol Tester 1xUSB Cable 1xManual