S4 Ultra Smart Watch – AMOLED Bluetooth Call Fitness Tracker with NFC & Health Monitor

Stay connected, active, and informed with this advanced smart watch for men and women designed for fitness, outdoor sports, and everyday convenience. Featuring a stunning AMOLED smart watch display, Bluetooth calling, health tracking, and NFC functionality, this smartwatch combines powerful technology with modern style. The waterproof sports design and multiple fitness tracking modes make it ideal for workouts, outdoor adventures, and daily life. With heart rate monitoring, sleep tracking, blood oxygen detection, and smart notifications, it helps you stay on top of your health and productivity anytime. Experience smarter living with a stylish all-in-one wearable companion.

Key Features
• Vibrant AMOLED HD display delivers sharp visuals and smooth touchscreen performance.
• Bluetooth calling and smart notifications keep you connected anytime, anywhere.
• Advanced health monitoring tracks heart rate, blood oxygen, sleep, stress, and activity levels.
• Waterproof outdoor sports design supports fitness training and daily wear with multiple sports modes.

Why Choose Our S4 Ultra Smart Watch?
Unlike ordinary watches, this smartwatch combines advanced health tracking, fitness monitoring, communication, and smart functionality in one stylish wearable device. The AMOLED screen provides a premium viewing experience while Bluetooth calling and NFC support add everyday convenience. Its durable waterproof design and extensive sports tracking features make it ideal for both active lifestyles and professional use.

Perfect For
Perfect for fitness enthusiasts, outdoor adventurers, professionals, students, travelers, and anyone looking for smart wearable convenience. Ideal for workouts, running, hiking, cycling, swimming, health monitoring, daily communication, and productivity tracking.

How It Works
The smartwatch connects to your smartphone via Bluetooth to provide real-time notifications, health monitoring, fitness tracking, calling functions, and smart wearable features directly from your wrist.

How to Use
Charge the smartwatch fully, pair it with your smartphone through the RDFit app, customize settings and watch faces, and start tracking your daily activities and health data.

Care & Maintenance
Clean the watch and band regularly with a soft cloth, avoid excessive impacts, and recharge the battery as needed for optimal performance.

Product Specifications
• Model: S4 Ultra
• Display Size: 1.53 in. AMOLED HD Screen
• Resolution: 360 x 360 AMOLED Display
• Bluetooth Version: 5.3 BLE
• Battery Capacity: 300–450mAh
• Battery Life: Approx. 5 Days
• RAM: 128MB
• ROM: 256MB
• Waterproof Rating: Professional Waterproof / IP68
• Fitness Tracking: Steps, Calories, Distance, Multi-Sports Modes
• Smart Features: Bluetooth Calling, NFC, Compass, Music Control, Notifications, Voice Assistant
• Compatible Systems: Android & iOS
• App Support: RDFit
• Band Material: Silica Gel
• Band Width: 0.87 in
• Band Length: 10.24 in
• Display Shape: Round

Upgrade your lifestyle with smart fitness tracking, Bluetooth calling, and advanced wearable technology. Order the S4 Ultra Smart Watch today and stay connected wherever life takes you.