Other featuresAutomatic Volume Control offsets unwanted volume variation,Caller ID – so you always know who is calling,Ultimate convenience through easy set up. Simplified installation - Plug & Play product,Philips phones are energy efficient and designed to be respectful to the environment,Freestanding handset with a speaker for easy handsfree calls,Textured back cover for non-slip grip,Optimized antenna layout for great reception in any room#