Ordered direct from Zebralight a couple weeks ago and was back-ordered. Side of the light reads "SC5c II". The box contained what looks like the SC80/SC600 clip, camo headband with black silicone holder, and 2 extra o-rings.
Does it look as if the sticker on the cardboard box has been replaced, or affixed on top of an old sticker? This is mere speculation, but I was thinking that perhaps Zebralight shipped your light in a box that had previously contained a returned item, and the person who packed the (recycled) box with your SC5c failed to notice that there were some accessories left behind in it.
Or maybe someone at the factory was in a mischievous mood when they shipped your light
Either way, I would consider the extra goodies a bonus - one that unfortunately does not compensate for the terrible beam pattern.
Edit: Having read eraursls1984's post - who also received the extra headlamp clip and strap - I have revised my theory. At this point in time*, I think it is more likely that someone had mistakenly put SC5c II stickers on boxes that were pre-packed with H-series light accessories.
*Theory may be subject to further revisions.