... seconds OTP voice chip, IC chip, sound chip 1. 170 sec duration time 2. ... circuit. OTP voice chip ,sound chip, Voice IC--170 seconds OTP voice chip, IC chip, voice chips, sound chip, sound ics ... Mute will not take up any memory space.*The voice data re-use saves memory space.*Multiple control modes: key mode ... and any other products need voice messages. Melody voice IC--170 seconds OTP voice chip