Set of 2 wireless calls and a receiver. - Set includes: 2 wireless calls and 1 receiver - Color: White - Strap: Orange - Power: Plug-in - Operation buttons: 3 buttons (volume adjustment, etc.) Thank you for viewing. Operation has been confirmed. There is no instruction manual, but the volume can be adjusted with the top button in the third photo, and the melodies can be selected with the bottom two buttons. We are sorry, but please refrain from price negotiations. We have a cat, so please refrain from purchasing if you are concerned.