Replace a cracked, scratched, or malfunctioning front glass digitizer and OLED display assembly of a 44 mm Series 4 GPS/GPS+Cellular model Apple Watch.
The aluminum case Apple Watch is originally equipped with an Ion-X Glass face. The stainless steel or ceramic case is originally equipped with a Sapphire Crystal face. The two displays are functionally cross compatible but differ in their resistance to scratches, chips, and cracks.
All GPS-only model Apple Watch Series 4 has an aluminum case and an Ion-X Glass face.
