Cap-signaling device

U.S. Pat. No. 5,625,347 to MacLean et al, 1997, discloses an electronic bottle cap comprising a housing that includes a power supply, an audible message reproducing means connected to a speaker, and a switch for closing a circuit upon removal of the cap from the bottle. A signaling cap device comprises an audible message reproducing unit, a switch, a power supply, and a former of an audible message number, whereas the audible message reproducing unit is operative upon removal of the cap to reproduce one of N audible messages recorded therein depending on the message number.