The stylish second-generation citizen cz smart hybrid sport smartwatch with *18-day battery life is smarter inside and out. With a sleek 42.5mm gold ip case, the cz smart hybrid sport smartwatch is now available with an interchangeable 22mm dark brown leather strap. Inspired by the rich design of citizen’s iconic timepieces, cz smart marries innovative science from NASA and technology from IBM watson® with the style and quality you expect from citizen. Call up Amazon alexa™ with the built-in mic, track and monitor heart rate, and anticipate patterns of fatigue and alertness with citizen’s proprietary wellness app youq. Cz smart youq provides a 36-hour forecast ahead and offers highly personalized insights and suggested power fixes, actions to help you improve alertness and promote the building of better habits, readying you to meet whatever the day may bring. Additional functionality from the citizen connected app delivers the latest golf report and live sports. You can even sync to your nest, or August®, Yale® lock smart systems and other features through the riiiver platform. **compatible with both ios® and android™, the cz smart hybrid sport smartwatch runs on the citizen connected app. *battery life varies based on usage. **supported features may vary between countries with compatibility subject to change. Included: 1 Watch(es) Features: Sleep Tracker, World Time, Alarm, Date Function, Bluetooth Compatible, Backlight Display, Chronograph, Quick Ship Battery Type: Rechargeable Jewelry Closure: Buckle Tech Compatibility: Apple Ios, Android Tracking Capability: Steps, Activity Tracking, Distance, Calories Burned Band Color: Brown Dial Color: Black Metal Color: Gold Tone Case Width: 42.5mm Band Content: Leather Case Materials: 100% Stainless Steel Band Width: 22mm Care: Wipe Clean Country of Origin: Imported Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.