Main chip: ISD1820 Operating Rated Voltage: DC 3 ~ 5 V Power supply: 3 attached 5 V, can be installed pin header Recording/Playback Control Mode: button control or single IO has the control line is being used; Type:ISD1820 Recording Playback Module Colour:blue Material:Electronic component Size:38mm x 42.5mm Package Contents: 1 x Module Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.