To use a simple to 10 seconds of voice recording. High-quality, natural voice restored. Can be used as propaganda module. With looping, jog playback, single-pass play feature. Available single-chip controller. Product descriptions This module can directly drive a small speaker 8 ohm 0.5W. Speaker: 8 , 0.5W Operating voltage: DC 3 ~ 5V. Audio recording control mode: the keys to control or microcontroller pulled I the line of against REC button: button set, you can press and hold the recording, release the button to stop recording RLAYE keys: Trigger mode of reproduction is by using playing this whole speech PLAYL keys: Press and hold Jog playback, until playback, release to stop playback RPL Jumper: Loop-mode control, loop playback FT Jumper: direct control, microphone voice can be reproduced by the speaker Product Weight: 20g / 0.67 oz PCB size: 4.3 x 3.8 cm / 1.7 x 1.5in Speaker dia. 4cm / 1.6 inch Package List:1 x ISD1820 modules 1 x Speaker 1 x Free Cable