Satin Nickel Finish, Wireless Doorbell Kit, Chime Uses 3"C" Batteries, Not Included, Transmission Range Up To 150', Wireless Push Button With Battery Included, Adjustable Volume Control, 3 Sound Options: Westminster, Ding-Dong & Ding, Sound Decibel: 75 Decibel Max, 3.75"W x 2"D x 7"H.