Question 1

What card to use in A139 PRO?

Accepted Answer

VIOFO recommends using a high endurance MicroSD such as the Sandisk Max Endurance or Sandisk Extreme.

Question 2

Can the camera record in 4K?

Accepted Answer

Yes, the front camera supports 4K, and 1080P for back cameras, below you shall find the details.

You can refer to the below.

1CH: 4K 2160P 30fps
2CH: 4K 2160P 30fps+1080P 30fps
3CH: 4K 2160P 24fps+1080P 24fps+1080P 24fp

STARVIS2

VIOFO A139 Pro Duo Dual Dash Cam