Fangrui Product Details Clear Lcd Display: The Digital Alcohol Tester Features An Hd Lcd Display That Shows Precise Values, Making The Results Clear And Easy To Read. High Precision Technology: Equipped With A High-precision Chip And Intelligent Sensor, The High Precision Breathalyzer Alcometer Filters Out Other Substances, Leaving Only Alcohol For More Accurate Testing. Non-contact Testing: The Professional Portable Alcohol Detector Uses A Breath Detection Method That Does Not Require Direct Contact With A Mouthpiece, Ensuring A Healthier Measurement Process. Voice Broadcast Function: The Non-contact Alcohol Tester Includes An Upgraded Voice Broadcast That Announces The Test Results, Making Them Simple And Straightforward To Understand. Tri-color Indicator Lights: The Handheld Digital Breathalyzer Uses Three Different Color Indicator Lights To Display Test Results At A Glance. It Also Features A High-capacity Lithium Battery With A Rechargeable Design And An Upgraded Type-c Charging Port. Specification: Voltage: 5v/1a