Buy from Amazon.com : http://fave.co/1EH4lsZ
Polaroid Wireless Performance Battery Grip For Canon Eos 50D 40D 30D 20D Digital Slr Cameras
Product Description :
Attaches Through Cameras Tripod Mount And Battery Compartment Durable Rubberized Suface Improves Grip Handling
Intuitive Placement Of Key Camera Controls Makes Portrait Shooting As Easy As Landscape Shooting
Provides Up To Double The Shooting Time When Used With BP-511 Batteries Or Equivalent
Can Also Be Used With Standard AA Batteries Thanks To Included Speedloader
Remote Shutter Release Included 3 Year Limited Warranty