1.USB:You can download MP3 audio files by connecting to a computer via a MICRO-USB data cable. <br> <br>2.Charging indicator light:The indicator light is always on during charging,and the full light goes out. <br> <br>3.Play indicator light:It is always on during voice playback. <br> <br>4.Support downloading multiple voice files,and voice will be played each time it is triggered. <br> <br>5.8M memory,1M can store about 1 minute of audio files;the volume can be adjusted;the product comes with a 3.6V button lithium battery,which can be via USB. <br> <br>Model:JR1652 <br> <br>Compatible audio and video device styles:speakers, digital-to-analog converters (), players <br> <br>Memory size:8M <br> <br>Product name:USB sound module box <br> <br>Sound format:MP3 <br> <br>Music time:8 minutes <br> <br>Function: or sound, blessing words, or sound <br> <br>Battery:rechargeable 3.6V button lithium battery (included) <br> <br>Colour:White <br> <br>Material:Plastic+PCB <br> <br>Specification: B: Keyboard Version <br> <br>Package Contents: <br> <br>1 x USB sound module box <br> <br>Only the above package content, other products are not included. <br> <br>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.