The Individual Ring Tones (up to 90 seconds in total playing time) can be transmitted via a micro SD card on the ECHO. The ring tones are using the supplied software to edit and on the SD card. (SD card not included in the delivery) of the ECHO has a bright LED flash. 2-fold distinction reputation for optimal access control. Visual and audible low battery indicator for the batteries. Keys for call signal setting. The sound and the flashing light can be deactivated separately. The surface of the receiver in high-gloss finish white. 90 seconds total playback duration/FLASH-LED. Includes software for the ring tones.This text is machine translated.