The ClearSounds ANS300 is a digital recording answering machine that makes your voice messages up to 30dB louder, amplifying with clarity and adjustable message playback speed control. The ClearSounds ANS3000 digital answering machine lets you customize the volume that your messages play for greater clarity and speed control. This is an analog device that works with phone systems that support analog devices. Features: 30dB of amplification Slow speech message playback with 3 selectable speech speed levels Works with analog phone lines LED message counter 3 selectable playback speeds 30 minutes recording time Remote access Optional battery backup lets you receive new messages for 2 hours during a power outage; other answering machine functions are not accessible on battery power Warranty One year limited warranty Brand ClearSounds Product Type Accessory