For MacBook Pro Retina 15.4 inch A1398 4 in 1 Upper Cover Film + Bottom Cover Film + Full-support Film + Touchpad Film Laptop Body Protective Film Sticker(Space Gray) Tag-Earphone Jack 24-bit SPDIF incoming bit stream

24-bit SPDIF incoming bit stream on left and right channels

Use HDMI port to mirror or extend your screen to HDTV

three-band balance

The size of the socket end of the USB-C/Type-C interface is as small as the original Micro USB specification

For MacBook Pro Retina 15.4 inch A1398 4 in 1 Upper Cover Film + Bottom Cover Film + Full-support Film + Touchpad Film Laptop Body Protective Film Sticker(Space Gray) Tag-Earphone Jack 24-bit SPDIF incoming bit stream1. Environmentally friendly materials, non toxic, good ductility and long life. 2. Hardness reaches 4H, anti scratch, protect your laptop in all directions. 3. Removable glue is used to ensure that it can be used for many years, and no residual glue is left when it is removed. 4. Air guide groove technology and glass micro bead technology can effectively prevent the formation of air bubbles and easily install. 5. Only 0. 2mm and thickness, does not