BabySense Home Non-contact, highly sensitive movement sensor set: - 2 sensors - 1 control unit - 1 control unit holder - 1 hook All items included. Four AA batteries are not included and sold separately. Official website price: ¥27,071 Purchased in 2023 to prevent Sudden Infant Death Syndrome (SIDS). Used for about six months and functioned properly. Operation has been confirmed. My son is now 2 years old, so I no longer need it, and I am selling it. The manufacturer's warranty was for one year and has already expired. Please refrain from purchasing if you are extremely concerned about the condition, as this is a personal item. I generally aim to ship within one day of purchase, but shipping may be delayed during the New Year's holiday. *Additional Information* I will be away from home from January 1st to January 4th, so I will be unable to ship during that time. I will ship as soon as I return. Thank you for your understanding.