Very typical contact guard tour system,Durable alloy case,Waterproof and drop proof,Can be used in harsh environment. Communication by USB with data downloader. Software easy to use, have video guide for you, easily setup the system.Note: Software support all windows system( 32bit & 64 bit); NOT support Apple MAC system Storage Capacity: 10,000 records;Low power consumption, Long battery life, Support 350000 continuous readings. Automatic alarm when full charged or lower power Easy carrying. Easy operate, touch and read, 20PCs check point+5 pcs guard button, full system International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.