Sinn Watch 917 GR The Rallye. 917.010 Leather Sinn watches continue to impress with their sporty and sophisticated designs, perfect for professional men in need of a reliable and striking timepiece. Found within the polished 44mm stainless steel case of this Sinn 917 GR watch is the Valjoux 7750 self winding movement that is proudly displayed through the open case back.  This impressive movement equips the timepiece with hours, minutes and subsidiary seconds function, a date display at 4 o clock, a power reserve indicator, chronograph function and a countdown bezel. The glossy cream dial is unmissable beneath the scratch resistant sapphire crystal glass with antireflective treatment, and like many Sinn watches, the dial also boasts indices and hands coated in luminescent colour for optimal legibility even in the dark. Having become famed for their fully equipped timepieces, the brand has enhanced this Sinn 917 GR The Rallye watch by including Ar-Dehumidifying technology which enhances functional reliability and freedom from fogging. To complete the sporty look of the timepiece, a luxurious leather strap and stainless steel buckle is added.