Iwc ingenieur Mission Earth

Good evening
I am new to this forum can anyone give me some advice about the Mission Earth 323601 what accuracy can I expect, are the rubber straps readily available. I have seen one in the preowned section of a jewellers near me £4,250 which is negotiable does the forum think this is a good deal it is on a rubber strap with box and papers and comes with a 12 month warranty. Any help would be greatly appreciated. 2011 model.

Hi there a complete change of plan have bitten the bullet and purchased a 34mm SL Ingenieur movement no. 2388322 with white dial completely refurbished just doing normal checks for accuracy, will post pics later