The DP540 is a Digital Player for Message/ Music On-Hold. It is solid-state designed with CD quality sound for multi-purpose usage. With 4 tracks available for recording Message/ Music, the DP540 is very useful for playing the Message/ Music to meet the various business demands. The built-in non-volatile FLASH memory stores the high quality crystal-clear sound with PCM 64Kbps sampling rate. The stored content of messages/ music can be preserved and lasted up to 10 years under power failure.