TECH SPECS - Case : 44 mm, Stainless Steel - Strap : 22 mm, Interchangeable - Operating System : Powered with Wear OS by Google - Processor : Qualcomm Snapdragon Wear 4100+ - Memory : 1GB RAM, 8GB Storage - Display : 1.28 #34; Color AMOLED / 416 x 416 / 326 ppi - Customizable Chroma Dial : * Four lighting effects available via the watch settings * Breathing * Spectrum Cycling * Static * Wave - Input : 2 Additional Push Buttons (configurable), Rotating Home Button, Touchscreen, Voice - Sound/Actuator : Loudspeaker, Microphone, Vibration - Connectivity : Bluetooth 5.0 LE, GPS, NFC SE, WiFi - Sensors : * Accelerometer * Altimeter * Ambient Light * Compass * Gyroscope * Off-body IR * PPG Heart Rate, SPO2 - Battery: 24 Hr + multi day Extended Mode **Varies based on usage and after updates install**. USB data cable with magnetic dock snaps to split rings on watch caseback and spins 360 degrees for ease of use. Approximately half an hour to reach 80%. - Compatibility : Wear OS by Google works with phones running the latest version of Android (excluding Go edition and phones without Google Play Store) or iOS. Supported features may vary between platforms and countries with compatibility subject to change. Wear OS by Google and other related marks are trademarks of Google LLC. - Preloaded Apps : Agenda, Alarm, Battery-Optimized Activity Mode, Calendar, Cardio Level Tracking, Cardiogram, Contacts, Enhanced Phone Dialer App, Google Assistant, Google Fit (Workout, Heart Rate, Goals, Breathe), Google Maps, Google Pay, Google Play Store, Nike Run Club, Noonlight, Smart Battery Modes, Spotify, Stopwatch, Timer, Translate, Wellness Apps with Sleep Tracking 1 Years warranty by Razer.