Baby alarm that detects a baby's movements. It's the type that attaches to a diaper. Purchased new online in February 2025 and used for about 3 months. Used almost every day when the baby was a newborn, and occasionally after that. I stopped using it after the baby started rolling over, and it has been stored in its box. I also purchased replacement batteries, but I didn't use them, so I'll include one new battery. (The main unit already has a battery, so you can use it right away.) *This product requires special batteries. The extra battery was purchased separately for 700 yen. - Brand: BabySmile - Model: E-202 - Product Name: Baby Alarm - Function: Detects baby's movements - Target Age: From 0 months - Included items: Instruction manual, one new replacement special battery - Color: White/Blue Thank you for looking.