Comprehensive Alcohol Testing Tool: This handheld breathalyzer includes an alcohol sensor and features a builtin rechargeable battery, allowing for up to 300 tests on a single charge. A reliable companion for parties or events. Userfriendly LED Display: The LED digital display provides clear and easytoread alcohol measurement values, with quick and accurate readings within seconds. Quick Check and Automatic Detection: With check and automatic detection modes, this breathalyzer ensures efficient alcohol measurement, ideal for use or gatherings with friends. Durable Materials: Constructed from ABS material, this device is resistant to wear, promising longlasting performance in various environments. Use scenarios: At parties or events to quickly gauge alcohol levels. For safety before driving after social activities. During small group gatherings to monitor and compare readings among friends.