It's been a long time since Sprint has seen a Windows Mobile powered device from Motorola, but today marks their return as they announced the ES400 which is a new enterprise digital assistant (EDA). Expected to be sold through Motorola, Sprint, and other partners of the PartnerEmpower network channel, this rugged style Windows Mobile smartphone packs plenty of features to fill in the stomachs of enterprise users. In addition to packing Windows Mobile 6.5.3, the handset also offer a 3” VGA display, camera, GPS, 3-axis accelerometer, one button scanning of 1D and 2D bar codes, 802.11 a/b/g, and includes an app for push-to-talk over VoIP. No worries will come to mind if one happens to accidentally find the handset slipping out of their hands as it meets MIL-STD 8210G drop specifications. Although it may be more than what the traditional smartphone user can handle, the Motorola ES400 should be more than equipped at providing the special needs usually reserved for enterprise users. With an expected release some time later in the year, there is still a question regarding its pricing as it has yet to become confirmed.