... quartz movement Big size sport watch with PU leather strap1. Watch case: alloy; 2. Watch band: PU leather; 3. Watch movement: Japan Y121 quartz ... competitive advantages.Develop the latest products especially for youThe top product R&D team keeps up-to-date market ... chain total service provider. Established in 1994, it covers watch design, R&D, production, purchase, sales, logistics, distribution etc. ...