Smart operating system Android 11, open platform, strong extendibility, APP customizae as per different industries High performance, easy operation Quad-core processor,ARM Cortex-A55 structure,basic frequency up to 2GHz Various communication methods Bluetooth, wifi, USB disk, Type-C, 4G network(optional) Mass memory and storage 4G RAM +32G ROM(8G+128G, extensible), smooth running Large HD screen, free touch 720P 5.5-inch touchscreen, high resolution 720*1280, strong light proof, clear and distinct Strong battery life, efficient and smart High capacity lithium battery, smart battery management, supports toggle display of single face and double faces, long working hours Advanced angle measure system CCD array angle measure system design, efficiently remove system errors Multifunctional android survey software Brand new android software Surpad, and plentful survey apps, quite facilitate the field work Easy and quick data transfer Supports csv/txt/dat files quick import and export especially CAD drawing loading and stakeout, OTA upgrade available Graphical stakeout, as plain as print Supports CAD graphical stakeout in a more efficient way