This is not just a simple fitness-tracker; it’s a smart watch that can receive calls, messages, emails, social media alerts, etc. The case is an aluminum aircraft alloy. It has a wide range of faces designed especially for this model, both preloaded in the watch, and downloadable through the Tous Wear App. TOUS T-Band Mesh smartwatch with stainless steel bracelet and aluminum case. Compatibility: Android 7.0 and iOS 12.0 or higher. Display/LCD: rectangular touchscreen measuring 1.47 inches TFT-DLC in color (Full Touch) with a resolution of 172 x 320. Operating system: RT OS. Connectivity: Bluetooth version BLE 5.0. Antenna gain: 0 dBi. RAM memory: 128 kb, 64 MB Flash ROM. Battery: 140 mAh capacity, 3.8 V lithium-ion/2.9g rechargeable battery, rechargeable with magnetic cable (min 5 V/1 A), 5-7 days in operation and 8-10 on standby. Chipset: Realtek RTL8762CK and heart rate: HRS 3300- ARM Cortex-M3 - 53 MHz frequency. Watertightness: IP68. Functions: 5 TOUS faces, one of which is interchangeable from the TOUS WEAR APP, hours, minutes, month, date, day of week, daily activity with step counter, calorie counter and distance traveled in miles or kilometers, sports (walking, running, hiking, cycling, treadmill/elliptical, yoga and basketball), heart rate, sleep monitoring, blood pressure (approximate), blood oxygen (approximate), notifications (calls, WhatsApp, email, SMS, Facebook, etc.) weather information, ovarian function, 1/10 seconds stopwatch, music control, phone finder and camera control. Milanese mesh closure with safety clasp.