Item to protect your baby's safety with a highly sensitive movement sensor. - Brand: babysense - Product Name: babysense home - Included: 2 sensors - Instruction Manual: Japanese instruction manual included - Function: Non-contact, highly sensitive body movement sensor - Target Age: For babies I used this at the hospital where I gave birth, so I bought and used it at home as well. I purchased it around September 2022 and used it for about a year, then again for about 4 months from August 2024. Operation has been confirmed, but I am not responsible for any operational defects. Batteries will be included. (Remaining battery life is unknown, but you can use it immediately upon arrival) *Please refrain from purchasing if you are looking for a perfect product or are overly concerned about minor details, as this is a used item. *The item will be wrapped in bubble wrap over the box for shipping.