For Apple Watch Ultra 3 / 2 / 1 49mm Plating Gloss PC Tempered Glass Integral Watch Case(Pink) Filter-RS485 / RS232 Series It has solved control signal

It has solved control signal transmission over a long distance

2mm double moving coil combination

0 interface can reach 5Gbps

smooth and sturdy 360-degree zipper

the temperature should be set to 80 degrees Celsius to 100 degrees Celsius

For Apple Watch Ultra 3 / 2 / 1 49mm Plating Gloss PC Tempered Glass Integral Watch Case(Pink) Filter-RS485 / RS232 Series It has solved control signal1. Easy to install, not harmful to watch. 2. Easy access to all ports and buttons. 3. Lightweight, will not add much weight to your wrist. 4. Full coverage protection, protects your watch from scratches. 5. Easy to install without need to remove watch band. Note: The product only has the case, not the body and watchband