1.Your Message, voice, music any mp3 and wav sound can program in module and card 2.3-3600 secs sound file available 3.Mature we specialize in sound module,greeting card ,sound module,voice module. 1. Message: voice, music and sound are available 2. Function: message recording(optional) 3. Voice recording duration: 3 to 270s for recording funciton 4. component: PCB, voice chip, a speaker, MIC, ...