Q666K Smartwatch with long-lasting 600mAh battery. Submersible heart and blood pressure monitor. •High-strength casing: highly resistant to inclement weather, demanding sports and everyday use. •Incoming call notification. •Push notifications from apps such as WhatsApp, Facebook, Instagram, etc. and SMS. •Stopwatch, countdown, alarm, remote smartphone camera shutter, remote music playback control, find watch/phone. •Includes magnetic USB charging cable. Health Features: • Heart rate and blood pressure monitor. •Pedometer with step, distance and calorie measurement. •Collection of data from the exercises performed and synchronization of movement data through the App. •Sedentary lifestyle warning. •Sleep monitor. Screen: 1.28 inches, 240x240 px. Battery: 600 mAh Bluetooth: BLE 5.1 Chip: gr5515 Sealing: IP68: Do not use in the shower, do not expose to steam, hot water, or condensation. ABS, metal alloy, silicone. For the smartwatch to work, you need to download a free app for synchronization. To do this: • Scan the QR code included in the instruction manual and download the app. •You can also download the “HBand” app directly from the Google Play Store (Android) or App Store (iOS). •Once downloaded and installed, open it and accept all requested permissions; sync the smartwatch with your mobile phone via Bluetooth using the app.