Customized greeting card for holiday 6S to 60S,or more Meet CE,RoHS For festival,holiday gift and promotion Pre-recording greeting card with cutomized artwork and audio,for birthday,fetivals,holiays gift,promotion and advertisement > Time duration of sound file: 6s,10s, 20s,or more,could be customized> Audio file can be offered and pe-recorded,with OTP or Mask chip(according to the order quantity ...