Expand your ClearSounds A400 amplified phone system into multiple areas in your home with the ClearSounds A400 DECT 6.0 Amplified Cordless Extra Handset. The A400 supports up to five handsets total, so you can place amplified phones in five different rooms! Additional handsets have all the same features of the original handset. Just pair the new handset with your main charging base and talk away! FEATURES: System supports 5 handsets. Up to 40 dB adjustable amplification. 6-level ringer volume control. Talking Caller ID, keypad, and ringtone. High-contrast keypad with big buttons. CONTENTS: Handset, Charging Base, Carrying Clip, Phone Line Cord, AC Power Adapter, (3) Rechargeable Batteries, User's Guide. NOTE: Caller ID requires subscription to Caller ID service through your local telephone service provider.