Earlier this year, Eye-Fi released its “Pro X2” 8GB wireless SD card at $150. The card features Class 6 read and write speeds and an 802.11n Wi-Fi module for super fast image and video uploads directly from a digital camera or camcorder. Add to that the ability to use the card across an Ad Hoc network (no router needed), RAW image file support, and Eye-Fi’s new “Endless Memory Mode” which clears out old files once they’re safely uploaded, and you’ve got yourself a powerful, albeit expensive, SD card.
Both cards feature Class 6 read and write speeds, 802.11n wireless, and Endless Memory Mode just like the Pro X2. The 4GB Connect X2 features automatic Wi-Fi uploads to a computer or one of 25 photo/video sharing sites, while the 8GB Explore X2 features the same along with lifetime automatic geotagging and a year of hotpot access at over 21,000 locations.
So basically for $50 less than the Pro X2, the Connect X2 does everything except handling RAW image files and the Ad Hoc networking stuff. Not bad.