This is a TPU iPhone 13 Pro Case that has an embedded MagSafe. There is a pause in the print to allow you to place a MagSafe magnet into the print before selecting “Resume Print”.

MagSafe:

Amazon.com: XZC Mag Safe Case Magnet Sticker 2Pcs Strong Magnetic Wireless Charging Magnet Mag Safe Sticker Magnet Circle for iPhone 12 Pro Max 12 Mini 11 Xs Xr 8 Mobile Phone Case : Cell Phones & Accessories