GPS Geographic Location: europe Screen Size: No Screen Special Feature: Internet Connected Battery Life: 30 Hours & Up Out Power: 0.8W Model Name: ZX905 Voltage: 5V Gps Module: Yes GPS type: GPS Tracker 4G Network Frequency: B1/B3/B5/B7/B8/B20/B34/B38/B39/B40/B41 2G GSM Bands: GSM: B3/B5/B8 Positioning Methods: GPS+LTE+WiFi+AGPS+LBS Work in Continents: Europe and Asia countries Tracking System: Free Android iOS APP Web Function: Remote Control, Build-in Microphone SOS Call: Yes, support two way communication Voice Recorder to APP: Yes Voice Monitor: Yes, auto answer call Mic: Two Mics Voice Active Call Back: Yes, support voice active sound callback Material: Plastic+metal colour: As shown Package Contents: 1 x ZX905 GPS positioning chip module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.