fitness tracker heart rate monitor watch blood pressure pedometer calorie waterproof smart watch compatible with ios android yihou <b>the watch could work most functions without connecting to a phone, such as hr, bp, step, calorie, sleep monitor etc. </b><br> <b>heart rate:</b>measure your heart rate with high performance chip.<br> <b>blood pressure:</b>equipped with blood pressure monitor, help you check and save the history date on watch. when measure the bp, please put the hand at the same height as the heart that will be more accurate, but kindly note it couldn't be accurate as medical device. <br> <b>sleep monitor:</b>automatically monitor total effective sleeping time, you can better understand your sleeping quality. how it works: detect your heart rate and excise such as the wrist movement to analyze. <br> <b>call and message remind:</b>phone's message vibration reminder and could check message on watch.<br> <b>step:</b> all day track your steps. the working principle: record it according the swing of arm. the 3d sensor is sensitive, whether swing a large or a little amplitude, the sensor will collect all of them. <br> <b>fitcloudpro:</b>find it from google play or app store, had better try to download before purchase <br> <b>additional function:</b> calories, distance, alarm, sedentary reminder etc.<br> <b>general:</b><br> acceleration: g-sensor<br> system: support android 4.4, ios 9.0 and above systems<br> <b>material</b><br> body: alloy<br> band: stainless steel<br> <b>display</b><br> display size: 1.28 in<br> display type: ips <br> <b>battery</b><br> battery: 280mah <br> standby time: 10 days<br> work time: 5-7 days<br>