1. Material: ABS 2. Power supply: with CR2025 button battery 3. Skin texture material, the button surface feels better 4. Multiple functions, safe operation, convenient and fast use 5. The design is humanized, and the volume is adjusted to the dial rotation mode 6. Support button backlight, easy to use when the light is dark 7. Widely applicable to various models, including cars, large trucks and trucks 8. Product size: inner diameter 46mm, length 120mm, thickness 8mm 9. Note: The navigation learning interface must have the steering wheel learning function to use
