The other day I received a B1M, there was a slight delay in delivery - the seller assured that the dashcam was in stock, but as it turned out, a new batch appeared only at the beginning of July.
I ordered on AliExpress
While I will check, I will test, I will look "at the table".
First impressions - the build quality is good, the main unit is surprisingly very small - only 58x88 (100) mm, the block thickness is 20 mm. At the bottom of the block there is a platform for fastening to a 3M tape and two blind nuts for M3 screws.
Camera cables 5 mm thick, power cable and control panel - 4 mm.
In addition to a long power cable with an adapter, the kit includes a 1 meter USB cable.
I measured the current consumption by connecting it to a 5 Volt outlet, on average it turned out 750 mA.
Power consumption approx. 4 W (3,927W)
PS: I will add more information and photos later. The B1MCAM application works well.