From the Q collection by Fossil, the Nate men's hybrid smart watch features: black stainless steel bracelet with single-pusher foldover clasp closure brushed black stainless steel round case accelerometer sensor blacked-out dial with Arabic and stick indices receive smartphone notifications and accomplish daily fitness goals when the hour, minute and sub-eye hands spin or the watch case vibrates set an alarm, view 24-hour time, compare time in multiple time zones and track everything from steps to calories to sleep press the bottom pusher to take a photo, control music or find your phone with the help of the Fossil Q app interchangeable strap approx. 50mm case size; 13.5mm case thickness; 24mm lug width; 200+/-5mm bracelet circumference compatibility: Android devices 4.4+; iOS 8.2+/iPhone 5+ connectivity: Bluetooth smart enabled/4.1 low energy storage: 4GB replaceable coin cell battery battery life: up to 6 months (based on usage) What's in the Box: Q Tool, 1 x CR2430 Battery, Quick Start Guide Imported. Powered by the Fossil Q App, Fossil Q Hybrid Smartwatches are compatible with phones running Android OS 4.4+ or iPhone 5/iOS 8.2+. Q App is provided by Fossil Group, Inc. so your data will be stored in the USA. See the Q App Privacy Policy and Terms of Use for more information.