This is a compact alcohol checker. Although there are some folds and sticker marks on the outer box, it is new, unused, and unopened. I purchased it at Seki Drugstore, but I am selling it because I didn't use it. Trade One Alcohol Checker Arco Plus Measure alcohol concentration just by blowing into it! Use it as a guide for checking before driving or managing your physical condition after drinking. Just blow into it! Measurement in about 10 seconds! This alcohol checker is easy to use with simple operation. You can easily measure blood alcohol concentration by simply blowing into it. Compact and palm-sized. Convenient for carrying and storage. A convenient strap is also included. [Product Details] ● Product size: W35mm, D17mm, H95mm ● Material: ABS resin, electronic components, etc. ● Country of origin: China ● Weight (g): 20g ● Accessories Main unit x 1, strap x 1, instruction manual x 1 ● Blood alcohol concentration measurement range 0.00〜0.19%BAC, 0.0〜1.9g/L ● Startup time: Approximately 10 seconds ● Measurement time: Approximately 10 seconds ● Measurement method: Open blow method ● Sensor method: Semiconductor gas sensor ● Sensor life: 1 year after purchase or 1000 uses ● Memory function: None ● Operation sound: Yes ● Uses 2 AAA alkaline batteries (sold separately) ● Precautions for use The measurement data of this device is only one factor in determining whether or not you have been drinking, and it does not determine whether or not you are allowed to drive. ※ This product is not a legal alcohol detector.