According to comments of @teloz to this piece, OptiPen has been succeeded by the tap-dancing OptiClik. I join the choir of AutoPen vilifiers: along with its inability to back-dial, you can keep on dialling even if the insulin is kaput and there isn’t 2 colours of pen to discern between fast-and long-acting insulins – its difference of colour (blue&green) indicates its capability to dispense 2 or 1 unit. I’m back to the single-star-stuff…haven’t encountered OptiPen or-Clik here on home turf.