For Samsung Galaxy Watch 4 Classic 46mm Two Color Horizontal Silicone Watch Band(Black Grey) Tag-Public Broadcasting General Compatible with Huawei: MateBook

General Compatible with Huawei:  MateBook B5-420

4G wireless G system can be used as the master or slave unit of the wireless multi-lamp flash system

Product interface: USB3

8-speed speed control

For Samsung Galaxy Watch 4 Classic 46mm Two Color Horizontal Silicone Watch Band(Black Grey) Tag-Public Broadcasting General Compatible with Huawei: MateBook1. Material: silicone 2. Technology: This product is made of liquid silicone material, which is waterproof, sweat proof, comfortable and soft. 3. The strap adopts a thickened design, which is comfortable to wear and easy to use. 4. The material is harmless to human skin and non allergenic. 5. Suitable for wrist circumference: 5. 5 8. 7 inches Note: The package only contains the watch strap, not the main watch.