GF21 Mini GPS Car Tracker Usable With Phone

Pedometer: to measure the user's walking data. Alarm clock: set by guardian mobile phone app. Two-way call: address book number calls with users. Class anti-interference mode: set the non-interference time range through the guardian's mobile phone app, and shield the incoming calls from the equipment. Remote monitoring: a highly sensitive microphone that monitors the surrounding sound in real time in case of an emergency.