Fossil Q Men's Nate Stainless Steel Hybrid Smartwatch, Color: Black (Model: FTW1115) Looks like a watch, acts like a smartwatch. Smartphone notifications, activity tracking, custom goal setting, sleep monitoring, customizable buttons & automatic time zone updates Charging not required, estimated 12 months battery life based on usage; a gentle buzz lets you know when you receive a smartphone notification: texts, calls and updates Case size: 50mm; Band size: 24mm; imported; water resistant to 100ft (30m); black plated stainless steel case and bracelet with deployment clasp-closure; interchangeable with all Fossil 24mm bands Compatible with Android and iOS smartphones, specifically with Android OS 5.0 or higher, iOS 9.0 / iPhone 5 and above; Bluetooth smart-enabled with an improved data transfer of 4.1 Low Energy microcontroller