What exactly is the write speed? & What is the read speed?
The write speed is up to 15MB/s. The warranty for accessoires is 6 months.
How much recording time would a 128GB card store? I know the video quality, number of cameras, and audio are all variables but a general reference would be very useful.
The recording time is various for different camera models. It mainly depends on the resolution and bitrate, you can check it via this link:https://dashcamtalk.com/recording-time-calculator/
where can I find a delivery time line?
Normally it will deliver in 3 to 4 weeks, we also recommend buying from Amazon or local distributor to get fast shipping.