Thank you for viewing. There are about three small black stains, but they are not noticeable. Operation has been confirmed. -- Voice on/off. The Amazon Smart Plug is compatible with Alexa, allowing you to control the power of your appliances, such as lights, with your voice. On/off with routine actions. You can automatically turn on/off the power of your lights, fans, etc. by creating routine actions in the Alexa app. You can also operate the on/off function from outside the home using the Alexa app. Easy setup. After connecting the device to a power outlet, you can easily set it up by following the instructions on the Alexa app screen. (Please use the Alexa app installed on your smartphone for setup) Compact design. It does not get in the way of the other outlet. Also, you can plug it into the outlet in either direction. No need to prepare a smart home hub separately. Routine actions can be set up using the Alexa app. The initial setting has a name like "First Plug", but you can set it to your favorite name like "Light" or "Living Room Fan" using the Alexa app. It's also easy to change.