Wireless doorbell, with batteries and screws. Batteries included at the time of purchase. No scratches or stains. One unit is defective. Usable in two locations. - Type: Wireless Doorbell - Included items: Batteries, screws, user manual - Languages: Japanese, English - Model number: 36220380449 - Safety standards: FCC, CE, RoHS Thank you for viewing. One set of the three bells is broken. It became unusable because I was using it in three rooms. Those who are fine with two locations can use it. For example, the kitchen and living room, or the first and second floors, etc., I hope those who can use it will.