Sport Wristband Clock Tracker Blood Oxygen Round Display D18 Smart Band. Multi-Color Options: Available in Black, Blue, Red, Yellow, Green, Pink, and White. Comprehensive Health Monitoring: Tracks heart rate, blood oxygen, sleep quality, steps, and calories. Waterproof Design: IP65 waterproof rating suitable for daily wear and light water exposure. Long Battery Life: Up to 7 days of use and 15 days of standby time on a single charge. Wide System Compatibility: Supports Android 4.3+ and iOS 8.5+ devices. Flexible Customization: Offers full, minor, and sample-based customization services. Fast Lead Time: Standard delivery within 3-5 days, peak season within 15 workdays. Smart Notifications: Receives call, message, and app reminders directly on the wrist.