Description: Real time monitoring and schedule modeVoice call (contacts, SOS call button, two-way communication)Route historyVirtual barrierBody temperature measurementFall alarmPedometerSedentary alarmAlarm clockMagnetic refillMedication signalVoice standbyRejection of calls from strangersDo not disturb Dual GPS + LBS Positioning: The device supports dual GPS and LBS positioning, GPS is mainly for outdoor positioning, and LBS is mainly for indoor positioning. Geofence: Once the geo-fence is set up, you will receive an alert notice when the children are out of the range of the set up circle, which will ensure the safety of children and keep your peace of mind. SOS call: With the SOS button and two-way voice function, children or the elderly can press the SOS button to get help and talk with the host in emergency. Historical route: the device will keep a record of the historical route for three months, the user can check the records on smartphone. Specifications: Size: 49 x 40 x 14.5 mmWeight: 52 gBattery: 500 mAhWorking time: 4-5 daysLocation: GPS + AGPS + LBS + WifiNetwork: GSM850 / 900/1800/1900Tracked by: SMS, APP, Web