Daily Activity Tracker and Positioning: This locator can record the step count data in the past 7 days, easily tracking the past activity. Has a powerful positioning function, can work with LBS, and WIFI. No Installation Required: With a strong magnet, the tracker can be installed quickly and permanently. Just attach it to any iron surface, one-second installation. Built-in 400 mAh lithium battery, maximum 7 days standby, normal working time: 4 days. SOS and Positioning Query: For an emergency, press the SOS button, and the device will send out the call and message for help to the guardian. You can check the user's specific location through a mobile app or computer whether it is brought by children, the old, in the bag, or in a car, you can find them easily as soon as possible. Other Remote Functions: Find the tracker, alarm, shutdown, restart. These functions of a device can be implemented through the guardian mobile phone's APP.