The MindWare Mobile is designed to work with any SD or SDHC card, however the choice of card can affect the battery runtime. With all channels enabled, the Mobile will fill approximately 2GB/day. Advanced, high speed cards will not have any advantage in the Mobile and may draw more power than normal-speed cards. Even a small increase in power draw will add up to a large decrease in runtime over a long acqusition.
We have tested many cards for compatibility and runtime and chose to supply SanDisk 8GB SDHC cards to reach 18hrs of runtime with the Mobile. You may use any card but if you are trying to maximize your local-mode runtime, we recommend testing with that card prior to relying on it during a study.
The SD card is not currently used during Wifi-mode.