Description: 【Smart Watch with Bluetooth Calling】TOZO S3 has equipped with a built-in premium microphone and speaker, which can give you a great calling experience. After connecting to your mobile phone via Bluetooth, you can answer and make clear calls directly from your watch, freeing your hands. The smart watch can also receive notifications for text messages. You won't miss important calls and messages from your lover/friends, making daily sports, outdoor sports and life more concise and intelligent. 【1.83 inches Large HD Color Touch Screen】1.83 large color screen and full screen touch and hand sliding. It ensures smooth operations and 240*284 resolution for you. Our screen is better at color saturation and reproduction. Personalize your smart watch for men women with multiple customized watch faces provided, make your own stylish smart watch. 【Heart Rate, Sleep, Blood & Activity Tracking】With our smartwatch, it accurately monitors your heart rate in real time. Also, it provides a detailed analysis of your sleep quality by continuously recording your sleep patterns. During exercise, TOZO smartwatch automatically records daily steps, distance counter，calories burned, active minutes, measure your blood oxygen saturation and understand your physical state. 【Bluetooth Connectivity and Compatibility】When the S3 smart watch is connected to the app through Bluetooth, you can control the music player, view the local weather today, and support the mobile search function. TOZO Smart Watch is compatible with most iOS, Android or Bluetooth smartphones. Go to App Store or Google Play to download and install “TOZO Health” for free, then connecting our smart watch to your phone and start your journey of smart life. 【Long-lasting Battery Life & IP68 Waterproof】The large battery capacity (300mAh) and low power consumption design offers longer endurance. It could last about 10 days when in auto monitoring mode for heart rate or 7 days when in the instant detection mode. TOZO Smart Watch is designed with IP68 waterproof rating(50m waterproof), so no need to worry when you wear it while rain or sweating and doing the dishes out.