⌚【MILITARY GRADE STANDARD】- EIGIIS military smart watch has a 10 military grade certifications and can be used under the harsh environmental conditions, such as 70 ℃ heat resistance, -40 ℃ cold resistance; 120 hours resistance to humidity, 96 hours resistance to salt spray. ⌚【BLUETOOTH DIALING & BUILT IN SPEAKER】- EIGIIS tactical smart watch supports Bluetooth dial and answer calls. You can directly make calls and answer calls on your watch. Get free from your phone especially when you are driving, or jogging, etc.Built in speaker, EIGIIS mens smart watch can not only control the phone music playing, but also play the music itself. Besides, EIGIIS also supports calorie/ distance calculation, weather forecast, message notifications etc. ⌚【MULTI SPORTS MODES & LONG TIME STANDBY】- As a fitness tracker watch, EIGIIS mens sport watch supports 7 sports modes to record your workout on "Dafit" app. Connect your phone's GPS to measure accurate activity data and see your fitness targets. Built in a 400mAh battery, it only takes 2 hours to get fully charged and can be used for up to 7-10 days and long standby time 30-45 days. Definitely convenient for your short outdoor activities and adventures. ⌚【HEART RATE MONITORING & SLEEP TRACKING】- EIGIIS smart watch supports sleep tracker, heart rate monitor, blood pressure & oxygen in real time to get a better understanding of your health. Attention: It is not a medical device!! This Blood Pressure function can't be used as Professional Medical Blood Pressure Monitor. EIGIIS mens tactical smart watch is waterproof so you don't have to take off while washing your hands, however, not for swimming or soaking in water. ⌚【GREAT COMPATIBILITY & 1 YEAR GUARANTEE】- EIGIIS android smart watch for men is compatible with most iOS 9.0 and Android 4.4 and above smartphones(not for PC, iPad or tablet), supports iPhone, Samsung, Huawei, Xiaomi, OnePlus etc. Turn on the phone's Bluetooth and connect to the smart watch via APP. EIGIIS provides 12 months money-back or free replacement. Buy without risk! After-sales service to assure your long-term enjoyment. If you have any questions or problem, pls contact us any time.