• Display: AMOLED Actua display with high resolution and brightness up to 2000 nits, with a variable refresh rate from 1 Hz to 60 Hz. • Processor and Performance: Qualcomm SW5100 processor (or Snapdragon W5 Gen 1) with an ARM Cortex M33 co-processor, and 2 GB of RAM. • Storage Capacity: 32 GB internal storage (eMMC type). • Operating System: Runs on Google's Wear OS. • Battery: • 307 mAh battery capacity for the 41 mm size. • 420 mAh battery capacity for the 45 mm size. • Battery life ranges between 24 to 36 hours depending on usage and power-saving mode. • Water and Dust Resistance: Water-resistant up to 50 meters (5ATM) and IP68 dust resistance standard. • Health and Sports Features (via Fitbit): • Fitness and daily activity tracking. • Heart rate measurement, blood oxygen level (SpO2), and electrocardiogram (ECG). • New features for training, daily readiness, cardio load, in addition to the sudden pulse stop detection feature. • Connectivity: Supports Wi-Fi, Bluetooth 5.0, and Near Field Communication (NFC). Almost new condition, black color