The PhoneMax is an amplifier telephone designed to emphasize the high frequency sound that make speech understandable for individuals with hearing disabilities. This phone provides 33 decibels of gain, is compatible with telecoil equipped hearing aids, and can be wall mounted or placed on a desk. Standard features include a large-button keypad, eight memory buttons for auto-dialing, auto redial, tone/pulse dialing selection, and an adjustable ringer. DIMENSIONS (HxDxW): 8.9 x 2.2 x 7.6 inches. COLOR: Light grey. WARRANTY: One year limited.