Clarity Extra Loud Big Button Cordless Phone (clarity-c410) - Emergency Dialing: In case of an emergency, get help quickly by pressing the red emergency button. Hearing Aid Compatible: Hearing Aid Compatible and TIA-1083 Compliant Amplified Conversations: Amplifies incoming sounds up to 30 decibels Comfortable: Ergonomic design for comfortable telephone conversations Cordless Wireless 900Mhz 30db Amplified Lighted Keypad Telephone