For Samsung Galaxy Watch4 / Watch4 Classic Three Strains Steel Watch Band(Black)1. Material: Steel 2. Comfortable to wear 3. Not easy to fade, long service life 4. The length of the strap is easy to adjust to fit your wrist 5. Easy to assemble, will not cause damage to the watch 6. Size: 165x20mm Note: The product only has a strap, not the main body

*****Here's why you'll love it:

- Rear view camera x 1

Battery: Built-in 3

ROBO carrier modulation

Rounded edge wrapping process

and supports 4K TV

Distortion: <0

USB interface: 6

Interface: USB/PS2

Universal magic hand bracket: Aluminum alloy

SAE J1850 VPW(10

Equipped with 3 cameras