Wireless Connectable 4.02-inch Magnetic Selfie Screen - Black This is a small display that magnetically attaches to the back of your smartphone and wirelessly connects to display the image from your smartphone's rear camera. You can use the high-quality rear camera to take selfies or videos while checking your own image. - Type: Magnetic Selfie Screen - Battery: Built-in battery (1800mAh) - Connection: Wireless connection - Size: 4.02 inches Thank you for viewing.