Thank you for viewing. Please be sure to read the profile. This is for one thermometer. I bought it 3 years ago and used it about 5 times. The battery was dead, so I replaced it with a new one before listing it. I tested it and disinfected it with alcohol. There is an instruction manual. TDK digital electronic thermometer, measuring range 32.0-42.0℃, accuracy ±0.1℃. - Brand: TDK - Model: HT-301 - Type: Electronic thermometer - Measuring range: 32.0-42.0℃ - Accuracy: ±0.1℃ - Display: Digital display - Power: Button battery (LR41) There were no noticeable stains, but there may be some that I didn't notice. This is a used item, so please consider purchasing it after looking at the photos in its current condition. Please refrain from purchasing if you have any concerns. There may be color differences depending on your monitor. Please refrain from purchasing if you are concerned. All items are sold as is, and are used. There may be odors, yellowing, minor scratches, and creases that I may not have noticed. Please refrain from purchasing if you are looking for perfection. Please understand that all items are used. Shipping will be via Yamato Takkyubin. Domestic shipping only. To keep shipping costs down, I will use recycled materials and simple packaging with compression. Thank you for your understanding. If I don't hear from you and your payment is late, I will assume you are not interested in purchasing and will cancel the order at the buyer's convenience, so please understand. No returns or refunds under any circumstances. Size: Approximately 15 x 3.5 x 1.5cm