The Defiant Doorbell Chime is a stylish and durable door chime designed for both wireless and wired installation. With a sleek brushed nickel finish, this chime is sure to complement any door hardware. It operates on 3 batteries and has a wireless connectivity option for easy installation. The chime measures 2.25 inches in length, 6 inches in width, and weighs 7.21 ounces, making it a versatile and practical choice for any home.