- Portable design: This LED breath alcohol tester is compact and lightweight, making it easy to carry for on the go testing. It is suitable for personal use or when you need a quick check before driving. - User friendly operation: A straightforward interface with voice guidance in Chinese and English lets anyone operate it easily. Simply inhale into the device to obtain a result. - Precise measurement: Accurately measures breath alcohol concentration in a range of 0-200 mg/100 ml, providing reliable readings to help you make informed safety decisions. - Durable material: Constructed from corrosion resistant and wear resistant ABS material to withstand daily use without deformation and ensure lasting performance. - Clear indicators: LED indicators provide quick and easy readability of the results. - Use scenarios: Before driving after a social event; at work sites or safety checkpoints requiring breath tests; during travel or gatherings when a quick self check is useful.