This product is to increase the volume of telephone ring in noisy places.
To help the hearing-impaired to recognize ring coming.

Product Name : Amplified Telephone Ringer
Material : Plastic
Color : White
Flasher Color : Red
Size : 3 inch x 2 inch x 1 inch (LWD)
Weight : 123.9g
Package Contents : 3 x RJ11 Telephone Ringer

Only the above package content, other products are not included.
Note: and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.