GPS Geographic Location: Europe Screen Size: No Screen Special Feature: Internet Connected Battery Life: 30 Hours & Up Output 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: 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 Built-in Microphone: Yes SOS Call: Yes, supports two-way communication Voice Recorder to APP: Yes Voice Monitor: Yes, auto answer call Mic: Two Mics Voice Active Call Back: Yes, supports voice active sound callback Material: Plastic+Metal Color: 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 to be slightly different from the real thing Measurement allowed error: +/- 1-3cm