The first batch of Model One Black watches will be limited to 500 pieces and will ship in Summer 2015. 316L Stainless, Steel Case with Black PVD Hardcoat, Brushed with hand-polished accents, Guilloché textured high-impact Ion-Exchange glass crystal and caseback, Olio’s Signature copper Rapid-Charge Coil. 47 mm diameter case, 81 grams with genuine leather band, 161 grams with steel link bracelet, Water-resistant.Technical dial with burnished gold accents. Dual-mode Bluetooth 4.0 & LE. Microphone-enabled for easy control.