... and successive sound recording over 25 hours. Clock Functions:1. 5 key operations: HR, MIN, SET, LIGHT, andTALK/SNZ.2. 3 ... 10 minutes; and the alarming times canreach 6 at most.5. Two optional hourly chime functions.6. Beep sound of the alarm ... for a long time.4. Very convenient for remote operations.5. Featuring high imperceptibility6. A best helper for household, anti-theft ...