Product Details Ⅰ. Contactless Testing: Non-contact blow test design removes the need for mouthpieces, supporting healthier and safer operation Ⅱ. USB Rechargeable: Built-in rechargeable battery with USB charging function, paired with an LCD three-color display for clear result indication Ⅲ. Portable Size: Compact and lightweight construction allows easy carrying for on-the-go testing needs Ⅳ. Reliable Sensing: Equipped with semiconductor sensors to deliver test data Ⅴ. Durable Build: Made of ABS material for enhanced service life Specification Ⅰ. Material: ABS Ⅱ. Sensor Type: Semiconductor Package List Ⅰ. 1 x Alcohol Tester Warm Tips Ⅰ. Keep the tester away from high temperature and humidity environments Ⅱ. Allow the device to rest for 10 minutes before consecutive tests for accurate results