Designed for deep-sea diving (can tolerate greater than 500 bar = approx. 5000M!), it's quartz movement with silicone oil filling (for the purpose of reading the dial without any glare under water). Sapphire crystal. 7-year battery life.
It has never been worn. Comes with full package and user manual (in German). It has absolutely no scratch/scuff any where, and it's on original Sinn shark-skin buckle (water resist) strap with no sign of wear. More detail photos CLICK HERE
US$860 include shipping to most major city worldwide. Watch is located in Hong Kong. Payment by PayPal (with no fee) or international bank wire transfer accepted.