[Durable Construction] Made with high-quality materials for durability and reliability [Enhanced Memory Function] The upgraded tester can store up to 50 test results for easy reference [Non-Contact Breathalyzer] No disposable mouthpieces are needed. Designed with a clean, non-intrusive interface to deliver high-precision results [Intuitive Display] Results are shown on an LCD screen with three color indicators for quick understanding [USB Rechargeable] Equipped with a high-capacity lithium battery, which lasts for extended use on a full charge [Portable and Convenient] Compact and easy to store, this breathalyzer is ideal for home use, outdoor camping, festivals, and more. Keep it in your car for quick access whenever needed Specifications: Material: ABS Dimensions: about 30.6 x 13.5 x 58.74 mm / 1.2 x 0.53 x 2.31 inches Voltage: 5V Battery Capacity: 120mAh Display: LCD Measurement Range: 0.000-0.199% BAC Measurement Method: Quick check with automatic detection Measurement Duration: 20 seconds Operating Temperature: 0-45℃ Resolution: 0.00-0.99 Preheat Time: 10 seconds Blowing Time: 10 seconds (typically 3-4 seconds) Response Time: <5 seconds