High-quality performance : High‑sensitivity wine sensor, the detection result is accurate and fast, without waiting too long,with compact shape, not taking up much space, light weight, easy to carry and easy to use.Unique design : Dust‑proof design, sliding upward to close the air inlet, can be used for a long time.Energy Saving : Low power consumption, it will automatically shut down if not used for a long time to avoid wasting power.Easy to Operate & Portable to Carry : Compared with other 1-button layout breathalyzers, portable alcohol tester is constructed with Backlit LCD screen, 3 kinds of indicator light indicates the test result, green means undrinkable state, orange means drinking, red means drunk.