The B300 has a hard-wearing magnesium alloy case resilient to small drops and hard knocks and features a shock-mounted hard disk drive.
B300采用了耐用的镁合金机箱，能承受较小的跌落和硬敲打，并装有防震的硬盘驱动器。
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Travel mechanism of each track consists of a variable two-speed piston motor, a planetary reducer and a parking brake, travel brake buffer valve is mounted on motor to reduce hydraulic shock.
To avoid electrical shock hazards, neither open the cover of the electrical box for the motor nor touch the components mounted inside the electrical box.