There are internal small low frequency fluxgate sensors and filling electric sensors inside OBEM.

1、Volume：600×600×700 mm

2、Deployment volume (seismic anchor included)：900×900×1000 mm

3、Electrode extend length：5 m

4、Deployment depth limit：6000 m

5、Channel 5 (3 for magnetic and 2 for electric)

6、Continuous operation duration：2 months

7、Maximum retrieve period：4 months

8、Magnetometer bandwidth：DC~500 Hz

9、Magnetometer noise：6pT / sqrt (Hz) @1Hz

10、Magnetometer measuring range：±100 μT

11、Voltage noise：1nV / sqrt (Hz) @1Hz

12、Electrode type：AgCl

13、Dynamic range：>120 dB

14、Power consumption：0.25 w

15、Sampling rate：1000, 500, 250, 100 sps

16、Weight (seismic anchor not included)：50kg

17、Seismic anchor weight ：25kg