1,Water-proof, dust-proof for feild use. 2,Muti-Computing included sensors, vision, data,GIS, ... , networks, modeling, wireless communication, operation exchange and etcAdvanced assistant-computer for intelligent analysis and expert decision like as model identification, data ... SD typePower Management Module:4pcs(8.4V 2500mAH) chargeable Li battery for 8H standing window XP industrial PDA