Using your Iron Man Mark 7 Wearable Helmet is a breeze. You can use voice commands in English and Chinese or the remote control to activate Jarvis lines and open or close the helmet. When you're done, just place it on the arc reactor base that also works as a Bluetooth speaker. Make sure to keep the helmet away from sharp objects to avoid scratching the metal and ABS materials. For the cotton interior, you can gently wipe it with a damp cloth if it gets dirty. The transparent lens is fragile, so handle it carefully. If you have any issues with the voice control or Bluetooth function, try resetting the device. And remember, the free shipping only applies within the USA.