Detailed Product Description * Low cost OTP type voice chip , can program customized sounds * Can be MASK type , for lower the cost .* duration time: 31 sec.* this duration caculate base on 6Khz , higher sampling rate , better sound quality, shorter duration .* Operating voltage: 2.2 ~ 5.5V * Operating frequency of 4MHz * Operating frequency 8MHz at 3.6 ~ 5.5V