Extra-Loud Phone Telephone Ringer up to 95dB w/ Flasher Bell Ringer for Old Man

Material:High-quality plastic
Size: 3.75" x 2.25" x 1"

Specification:
On and off switch on the side of the ringer. Easy to control of the ringer sound.
To increase the volume of telephone ring in noisy places.
To help the hearing-impaired to recognize ring coming.
The lamp flash is offered to avoid the ring noise in a quest environment.
No Battery Required.
No Power Cord Required.
No Special Jacks Needed.
Easy To Install and you could refer to the forth picture.

Package includes:
1xTelephone Ringtone Amplifier