Casio EDIFICE Scuderia AlphaTauri Limited Edition model EQB-1100AT-2ADR Collaboration in Scuderia AlphaTauri Formula 1 team Casio EDIFICE LIMITED EDITION EDIFICE Connected App Mobile link (Wireless linking using Bluetooth(R)) Accurate Time System: The watch automatically connects with a phone by Bluetooth to update is time setting. World Time: Settings can be configured quickly and easily using a special smartphone app. The current time in a second time zone is indicated by a dial on the face. Phone Finder: Long-pressing a watch button causes a tone to sound on your phone (as long as it is within range to receive a Bluetooth signal). Tough Solar: An advanced power system enables charging by exposure to even small amounts of light. Exposure to light charges a battery that provides enough power for up to five months of normal operation. Case / bezel material: Stainless steel One-touch 3-fold Clasp Solid Band Stainless Steel Band Carbon fiber bezel Sapphire Glass with non-reflective coating Black ion plated bezel 100-meter water resistance