The GSX is designed for cable-free and radio-free seismic data recording. The self-contained GSX Land Based Recorder unit includes 1 to 4 channels of 24-bit digitization, an integrated high sensitivity GPS receiver, built-in test signal generator, up to 32 GB per channel of non-volatile solid-state data storage, and a high-speed data port. The unit is housed in a sealed case, with an input connector and an extended life battery and data port connector.