Easy to carry the mobile terminal, meeting the needs of individual work. Three-proofing tech: water-proofing, dust-proofing and shock resistance. Built-in lithium battery supporting 8 hours of continuous record without connecting the network. Supporting TCP/IP protocols; transmitting video, audio and alarm data via network. Built-in 3G/4G and Wi-Fi (2.4G/5G) module. Connectable to platform for centralized monitoring. Supporting dual-stream: One for local high-definition storage and one for network transmission. Supporting full duplex two-way audio between device and platform. Supporting group intercom between devices via network. Supporting one SIM card for dialing. Both 3G and 4G SIM cards are supported. Supporting 64G internal storage and up to 64G external SD card. Build-in and external cameras for high definition videos. Built-in 13 megapixels rear-facing camera and 2 megapixels front-facing camera capture high definition pictures. Built-in LED flash lamp working as flashlight of camera or electric torch. Built-in GPS and BDS module precisely positioning the device and uploading location information to surveillance center. Built-in Bluetooth module supporting Bluetooth headset or printer. Fingerprint identification providing high security for access control. Different permissions can be assigned to the user accounts. Supporting simultaneous work of internal & external cameras. One-touch manual alarm can be uploaded to the platform. Supporting acceleration alarm in special case such as that the device falls off. Temperature alarm avoiding heat damage from the device. Automatically switch to power saving mode to extend the life of battery. Supporting OSD of date & time, camera name and positioning information. Supporting the connection of RF card reader (NFC). Supporting the switch of input method. Supporting Calculator, Clock, Torch and Compass. Supporting application installation by the admin account. Sharing Internet connection with other devices via Tethering; working as a portable Wi-Fi hotspot.