1.Advanced Data Display: Equipped with a clear LCD display, our breathalyzer displays the test results and operating status in real time. The backlight design ensures easy readability under diverse light scenarios, making it the perfect companion for night time drives 2.USB Charging Convenience: The breathalyzer is USB charging through a power bank, computer, or car charger. Equipped with a built-in rechargeable battery, it provides long-term testing that meets your needs for accurate alcohol testing 3.Real-time Alerts: Keep your drinking under control with precise alcohol concentration readings and provide sound and light warnings when test results exceed the set value 4.Small Size: Effortlessly carry this pocket-sized, lightweight breathalyzer for quick, discreet testing anytime, anywhere. Accurate readings ensure peace of mind for responsible drinking 5.Sturdy Build: Say goodbye to manual restarts! Our sturdy and intuitive breathalyzer is built to withstand daily use, providing continuous testing. Made of long-lasting ABS material, our device is perfect for multiple tests, offering high accuracy with its unique sensor technology This small alcohol breathalyzer tester is designed with a convenient backlight, ensuring easy visibility of readings. It lifesaver with its prompt sound and light alarm for alcohol detection. With its compact design, it is easy to carry and can withstand daily use. Specifications: Material: ABS+electronic components Product size: about 13x2.5x2.5cm/5.12x0.98x0.98 inches Measurement range: Blowing Voltage: 5V Warm-up time: 10s Response time: 10s Packing List 1 x alcohol tester 1 x instruction manual 1 x charging cable