TDK white thermometer HT-301, with instruction manual, allows for accurate temperature measurement. - Brand: TDK - Model Name: HT-301 - Included Items: Instruction manual - Color: White Thank you for viewing. Data can be transferred to an app. I have been blessed with children, and I originally suffered from severe PMS, so I had a Mirena IUD inserted. I don't think I will be taking my temperature anymore, so I am selling it. I purchased it about three years ago, and the usage period was 0-1 month. There is no box, but I have the instruction manual, so I will put it in a cushioned envelope and ship it. It has been wiped and disinfected, but please understand that it is a used item. I was just going to throw it away if I kept it, so I have lowered the price. If you'd like to try it out, please feel free to purchase it.