The "Pixlplay Camera" accessory allows you to effectively utilize your unused smartphone. This toy lets you insert your old smartphone and take photos. How about it as a toy for young children? To set it up, open the back cover of the "Pixlplay Camera," connect the cord to your smartphone's earphone jack, insert the smartphone into the holder, and close the cover. Then, tap your smartphone to launch the "Camera" app and use it. Therefore, smartphones without earphone jacks cannot be used. By doing this, if the earphone jack and the "Pixlplay Camera" are connected, you can use the shutter button function, allowing you to take photos by pressing the shutter button like a real camera. (Confirmed with an old iPhone and iPod touch) Also, a feature is that it makes mechanical sounds when you move the knobs and dials. The compatible smartphone size is approximately within 75 (width) x 142 (height) x 9.5 (depth) mm. ● Condition: I think I bought it about 5 years ago, but I still have the box and it's in good condition.