1.advanced non-contact technology, providing a fast and convenient non-contact design blood alcohol breathalyzer without the need for disposable mouthpieces. This design makes it ideal for multiple users. 2.Get reliable breathalyzer alcohol tester breathalyzer readings in under with our mini breathalyzer, calibrated for accuracy. The device uses state-of-the-art sensors to deliver precise results that you can trust, every time. It also features easy-to-understand color indicators for different levels, ensuring you can quickly assess your condition. 3.Our keychain breathalyzer boasts a compact and lightweight design that easily fits in your pocket or on your keychain, ensuring it's always within reach. The USB-C fast charging ensures your personal breathalyzers is always ready, whether you're at a party, a family gathering, or just enjoying a night out. Never worry about being caught off-guard without a charged device again. 4. One-button operation means no fumbling with complicated settings, making it incredibly easy to use even in stressful situations. The alcohol percentage tester features a bright, crisp LCD display that provides excellent visibility, even in low-light conditions. Its intuitive design ensures that anyone can use it without prior experience, adding to your peace of mind. Colour:Black Material:ABS Package Contents: 1 x alcohol tester 1 x data cable 1 x hook 1 x Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.