Features:

• Opteka Remote Release for Canon EOS 5D, 10D, 20D, 40D, & 50D Digital SLR Cameras
• Allows the camera to be released from a distance of up to 36 inches
• Half-press focuses, full press releases the shutter
• All Electronic - no batteries needed!
• Brand New, Sealed!

Editor Reviews:

Product Description:
Marketing description is not available.

Rating : - Works well.
Have used it to trigger my Canon 40D on my telescope and it worked just fine.