Features: Ensure you never misses a call with this telephone sound amplifier. Stay connected and catch every important call, even in loud environments or for those with hearing difficulties. This external device easily connects to any standard landline phone, providing adjustable volume levels for clear and timely reception of incoming calls. Additionally, it features a flashing light indicator for visual notification. Suitable for individuals with hearing difficulties or those working in noisys environments, this telephone sound amplifier ensures improved audibility and visibility of incoming calls. Perfect for home, office, or commercial use, this telephone sound amplifier works with all landline phones. Whether you are in a busy office or a lively household, stay connected and catch every important call. Stay connected and ensure you catch every call with this easy to install telephone sound amplifier. Enjoy increased volume and improved visibility, making it suitable for seniors, people with hearing difficulties, and noisys environments. No complicated installation or batteries required,Telephone Line Powered; Not suitable for card insertion wireless phones and networks IPphones; Specifications: Material:ABS Color:White, Size:Approx.100x60x20mm/3.94x2.36x0.79in Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xTelephone Ringer