Limited Edition to 300 Pieces. Sinn Watch 910 Anniversary Limited Edition Tan Leather 910.010 Tan Leather. To celebrate their 55th anniversary, Sinn watches have designed this vintage style chronograph known as the Sinn 910 Anniversary Limited Edition watch. But this is not just any standard Sinn chronograph, in addition to a stopwatch the piece also features a split seconds mechanism for recording intermediate times. Enclosed within the polished stainless steel case is the Valjoux 775 Rattrapante self winding movement that has a column wheel for actuation of the chronograph, something that seems to be a rarity within the watch industry today. You can watch the movement hard at work through the open case back and housed beneath the scratch resistant sapphire crystal glass is a gorgeous cream dial with applied indices, a red seconds hand and red accents. The timepiece comes with both a brown leather strap and a stainless steel bracelet and folding clasp alternative that you can change over at your leisure. Sinn watches continue to impress with their innovative designs and with only 300 pieces available of this Sinn 910 Anniversary watch, we don’t expect it to last very long.