Features: Information: Can set up a phone list for 47 dialable devices. The watch Measuring body temperature, heart rate, step count, calories, exercise distance, activity time, and rest time. Support track positioning, support electronic fence, support SOS one button distresses, and send information to platform management system (poppings-up alerts box), while automatically calling emergencycontacts. SOS distresses: In case ofemergency, press the SOS button to send a distresses call and message . Bidirectional call: When the contact number makes a call, it can communicate with the user to each other. Specifications: Material:PC Support AGPS + LBS+ Beidou + WIFI multiple positioning. Waterproof level: IP67 Battery capacity: 750mAH WIFI positioning accuracy within 50 meters Networkings positioning accuracy of 50-200 meters Size:Approx.45mm/1.77''x40mm/1.57''x18mm/0.71'' BandWidth:20mm/0.79'' Package Includes: 1Set Elderly Smartwatch note: Size:Approx.45mm/1.77''x40mm/1.57''x18mm/0.71''