E400 Smartwatch with blood glucose detection, blood pressure monitor and O2. ECG with chest measurement. Leather strap. •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, raise your wrist to light up the watch. •Weather information (via App). •Various dials of different styles, interchangeable. •Supported languages: Spanish, English, Italian, Portuguese, German, French, etc. •Includes magnetic USB charging cable. Health Features: • Real-time ECG analysis, with wrist, chest strap, and chest patch measurements. ECG monitoring. •Heart rate, blood pressure, blood oxygen and blood sugar monitor. •Pedometer with step, distance and calorie measurement. •Various sports modes: walking, running, cycling, basketball, football, badminton, skipping, etc. •Sleep monitor. •Sedentary lifestyle warning and drinking water warning. Screen: 1.39 inches, 360x360 px Battery: 280 mAh Approximate battery life: 4 days. Standby time: 30 days. Supported systems: Android 5.0+ and iOS 9.0+ Bluetooth: 5.1 Chip: GR5515 Sealing: IP68: Do not use in the shower, do not expose to steam, hot water, or condensation. ABS, metal alloy, leather. 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 “H Band” 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.