The other mount uses a zip tie, so it can accommodate more sizes. The instructions in the quick start guide were all pictures, and if ever there was an argument again the old adage that a picture is worth a 1000 words, this is it.
I finally consulted the online manual, which offered a little more detail.
I like that the competing lets you set these preferences as soon as you power it on the first time.
Battery life is rated at up to 12 hours, and I never had to recharge it during my testing.
Eventually, I got the hang of it, though, and waited for the unit to beep to indicate it was time to turn; it also beeps when you miss a turn.