... Circuit,ICs ,voice ic, sound chip, music ics, duration time ranges from10 to 340 seconds. WTV Single-chip Series Integrated Circuit ... variety of electronic system.The message duration is user selectable in ranges from 10 to 340 seconds,depanding on the specific device ... seconds OTP chip, Package:DIP16 ,SOP16, it can be used in short voice duration products.Equip with PC software and writer ...