4.8mm is actually the one most buyers go with, the 2.8mm is there for the really tight spots but the working channel drops to just 1.2mm which limits what tools you can pass through — the 4.8mm gives you that 2.6mm channel so biopsy forceps or suction catheters go through way easier.

Bending range is 180 to 270 degrees depending on which diameter you pick, and that's a spec we've dialed in over the years, it's pretty much the standard for getting around sharp angles in GI work without torquing the shaft too much.

You'll get a 3.5 inch HD screen as default with HDMI output, which is fine for most mobile setups, but if you need a bigger image we've got the 12.1 inch optional display — lead time on that is roughly 2 weeks extra (usually 20 days or so form order).
The depth of field sits at 3-50mm, so for close-up mucosal inspection it's fine, but don't expect it to handle deep cavity work the way a rigid scope would, that's just the nature of flexible video scopes anyway.

We pack them in an aluminun case standdard, lengths custom from 300mm up to 1000mm, and ISO13485 cert is current — we've shipped about 80 units this quarter alone with no returns for image quality complaints, but confirm lead time since MOQ can shift when raw materials are tight.
We can do a single unit for sample orders, but standard MOQ is 5 pieces for bulk production.
Lead time is usually 10-15 working days for standard lengths; custom lengths might take a bit longer, around 20-25 days.
Yes, we include the ISO13485 cert and a quality inspection report with every order.
Sure, we offer a 12.1-inch HD display as an optional upgrade, just let us know when ordering.
Custom lengths go from 300mm up to 1000mm. For longer, contact us to check feasibility.