[Product Name]: Alcohol Tester [Product Color]: Black [Product size]: Approximately 90 * 25 * 26mm Product Material : ABS Charging Input : 5V1A [Blowing time]: 10 seconds (usually 3-5 seconds is sufficient) Preheating time: 10 seconds Charging method : USB charging [Battery capacity]: Polymer battery 300mAh [Subtitle Display]: LED English Display [Range]: 0-0.199% BAC, 0-1.9G/L [Net weight of product]: Approximately 22.5g [Product gross weight]: Approximately 69g [Product Usage]: Check for drunk driving and test alcohol concentration Product features : Non contact detection is more hygienic, scientific filtering and purification chamber, portable Type-C charging. LED high-definition digital display screen, precise measurement, and instant results.