Smart Watch, Fitness Tracker with 1.57inch Touch Screen, Smartwatch for Men Women Blood Oxygen Meter Heart Rate Sleep…

【SMARTWATCH FOR IPHONE & ANDROID PHONE】The CS254 Smart Watch compatible with iphone at iOS 10.0 above & Samsung at Android 5.0 above system. And the “Zeroner Health Pro” app that you set up on phone can be able to manage the smart watch with iphone compatibility and you can adjust watchbands from 5.90-9.84in to fit well for adult and kids’ wrist.
【ANSWER CALLS & VOICE OUTPUT】The smart fitness watch can not only send message/app notification, but also receive alerts of the calendar or hanging calls, etc and this would also active Siri, answer phone call, listing to music via the watch directly which is more intelligent than the other similar watches in the marketing.
【 24/7h HEART RATE MONITOR & SLEEP TRACKER】The upgraded smartwatch can help you to check your heart rate, blood oxygen monitor (SpO2) anytime which can help to keep track of your sleep data(deep, light, awake sleep patterns) and bring you to more scientific sleep habits and optimize your exercise plan. (Note: not suitable for diving or sauna)