Thank you for viewing. This is a used item that has been used several times. I have confirmed that it works. Batteries are not included. Due to a malfunction of the device, a reading of around 0.075 may appear even if you haven't consumed alcohol. Please understand this before purchasing. 【Product Description】 ● Easily measure the alcohol concentration in your breath by simply blowing into it. ● LCD display with backlight ● Displays the measurement in mg/L ● Auto power off 【Specifications】 ■ Sensor: High-sensitivity semiconductor gas sensor ■ Measurement range: 0.000～0.950 mg/L ■ Minimum range: 0.025 mg/L ■ Measurement accuracy: +0.15/-0.05 mg/L (when measuring alcohol concentration of 0.250 mg/L) ■ Measurement preparation time: 10～15 seconds ■ Measurement time: 3～5 seconds ■ Batteries used: 2 x AAA alkaline batteries (sold separately) ■ Battery life: Approximately six months (used once a day) ■ Body dimensions: Width 38 x Height 103 x Depth 16 mm ■ Body weight: Approximately 30g ■ Operating temperature range: 10～40℃ ■ Operating humidity range: 40～90% ◉Instant purchase is OK◉ ・Please purchase only if you understand that this is a used item. ・Everything in the photos is included, so I will not accept opinions such as "smells bad," "dirty," or "different color," and returns are not accepted. If there is a problem, please report it to the secretariat. ・Please judge the reliability of the product based on my rating. ・Feel free to ask any questions you may have! ・When shipping, I will compact the item and put it in a compression bag, so please understand. ・The item will be shipped in simple packaging, so please comment before purchasing if you are concerned. I will pack it with bubble wrap, etc., for an additional fee. ・Shipping may be delayed due to business trips, so please be sure to comment before purchasing if you are in a hurry. I will consider your request. ・If you want to include shipping for a cash-on-delivery item, please comment in advance before purchasing. I will add the shipping cost to the product price and then list it. (Mercari shipping is probably cheaper) ・"I didn't know it was cash on delivery" is not acceptable, so in that case, you are responsible for paying the cash-on-delivery fee. ・The cash-on-delivery shipping method is set to "Yu-Pack," but if you have a preferred shipping company, please comment before purchasing. ・Please read the profile to avoid any trouble.