Model: SK4
App: RDFit
Key Features and Specifications:

Communication:

Supports Bluetooth calling.
Incoming call notifications.
Stores up to 20 frequently contacted numbers.
Synchronizes incoming call information with message notifications.
Call history.
Dialer functionality.
Music Control:Allows control of smartphone music playback.
Memory:RAM: 192KB
ROM: 128M (expandable with external Flash memory).
Health Monitoring:Step counting.
Sleep monitoring.
Real-time heart rate monitoring.
Blood oxygen level monitoring.
Blood pressure monitoring.
Sedentary reminder.
Hydration reminder.
Fitness Tracking:Records exercise steps.
Tracks exercise distance.
Calculates calorie expenditure.
Supports various sports modes.
Enhance Your Lifestyle with SK4 and the RDFit App! Stay connected with Bluetooth calling, manage your music on the go, and keep a close eye on your health with real-time monitoring of heart rate, blood oxygen, and more. Plus, track your fitness progress with step counting, distance measurement, and calorie tracking across multiple exercise modes. Upgrade your smartwatch experience with SK4 and stay in control of your daily life.