"New Design & Metal Surface: New modern design with aluminum material and powder coat finish keeps it from destroying and abrading. The metalized appearance provides an elegant gift for your friends.^ High-precision & Sensitive: This alcohol tester adopts high-precision & sensitive semiconductor alcohol sensor, generating accurate results.^ Non-contact & Hygienic: No need to switch mouthpieces. Save time and money. It is more hygienic and allows multiple persons to use without extra mouthpiece replaced.^ Safe & Rechargeable: Polymer battery is used and much safer for keeping it in vehicles. The portable alcohol tester is designed to be charged from type-C port.^ Small & Portable: This alcohol tester is very small and portable, can be easily carried in your wallet or pocket. A great necessity for wedding, parties, feast or other social activities to ensure safe driving after drinking."