Amazfit GTS 4 Smart Watch (W2168EU2N)

Advanced Fitness Support 150+ Sports Modes Smart Recognition of Strength Training Exercises Smart Recognition of 8 Sports Live Sports Data Broadcast Music Storage & Playback Strong & Precise GPS Tracking and Navigation Industry-first Dual-band Circularly-polarized GPS Antenna 6 Satellite Positioning Systems Route File Import & Real-time Navigation Track Run Mode & Smart Trajectory Correction Review & Share Your Activity PeakBeats™ Workout Status Algorithm Sync Workout Data to adidas Running & Strava Super Slim and Light Design​ One-piece Metallic Middle Frame Stainless Steel Navigation Crown Ultra-large 1.75" HD AMOLED Display 150+ Watch Faces & Always-on Displays Accurate BioTracker™ 4.0 Health Data Sensor 24H Heart Rate, SpO2 & Stress Monitoring Test 4 Health Metrics in 1 Tap Track Sleep Quality & Daytime Naps Luxurious Interaction Ultra-powerful Zepp OS 2.0 Adjustable Interface Rich Mini App Ecosystem with Games The Ultimate Personal Assistant Store Membership Cards Amazon Alexa Built-in Offline Voice Assistant Answer Bluetooth Phone Calls The Power to Stay In-style for Longer​ Up to 8 Days’ Battery Life New Battery Saver Mode Technical specifications: Dimensions (without heart rate base): 42.7x36.5x9.9mm Weight (without strap): 27g Body Material: Aluminum alloy middle frame high-gloss sprayed PC bottom shell Buttons: 1 Water-resistance Grade: 5 ATM Display Material: AMOLED Size: 1.75" Resolution: 390x450 PPI: 341 Touchscreen: Tempered glass anti-fingerprint coating Battery:Battery Capacity: 300 mAh (rated value） Charging Method: Magnetic charging Theoretical Charging Duration: Approx. 2 hours Typical Usage Scenario Battery Life: Up to 8 days Battery Saver Mode Battery Life: Up to 16 days Clock Mode Battery Life: Up to 30 days Heavy Usage Scenario Battery Life: Up to 4 days Accuracy GPS Mode: Up to 16 hours Balanced GPS Mode: Up to 28 hours Power Saving GPS Mode: Up to 33 hours Sensors Health: BioTracker™ 4.0 PPG biometric sensor (supports blood-oxygen, 4PD + 2LED) Movement Acceleration sensor Gyroscope sensor Geomagnetic sensor Barometric altimeter Ambient light sensor Positioning: Dual-band & 6 satellite positioning systems Connection: WLAN 2.4GHz, Bluetooth 5.0 & BLE Other: Microphone Support Speaker Support Motor: Linear motor Strap: Materials: Fluoroelastomer / Liquid Silicone/ Nylon Quick release Width: 20mm Min. & Max. Wrist Dimensions: 140mm-200mm Buckle: Classic pin buckle Items included: Smartwatch (including standard strap), magnetic charging cable, instruction manual Supported Devices Android 7.0 and above, iOS 12.0 and above Application: ZeppApp