I put in my order for a KA1 just hours after they initially started accepting preorders so mine was likely among one of the earliest batches to ship. Have never had any significant issues with it.
Love the large screen size and the orange comfort light. Have never had any issues with battery drain. I haven't personally tested out the waterproofness of my device, but other people have uploaded videos of submerged KA1s which have survived the plunge so I imagine that mine would, too.
Would highly recommend the KA1 if you are looking for something with a larger screen. Would buy another KA1 if mine were to have an accident or get lost or stolen.
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