Caller ID Display, TF Micro SD card, Mp3, Manage&Search the voice data,built-in speaker ... days a week, when with the 16 GB memory Micro SD card. Yet no computer is required in order to ... the home business.xcelent design ~ bring you more convenience ~ ~lMicro SD(TF) card storageConvenient to replace and carry.Allow loop recording ... , 2CH, 8CH, 16CH Standalone Voice Logger DAR-1001 with SD card works PBX