http://www.garrett.com/hobbysite/images_new/Garrett_AT_MAX_US.pdf
Garrett has made significant improvements on the current AT Pro platform. Users have been asking for a back-light....Done! Requested a built in wireless system...... Done! The unit has improved depth with the new "True All Metal Mode" while still utilizing the iron audio feature. The window for ground balancing has been enlarged, allowing better hunting abilities in wet salt/salt water environments. Some of the features only available on the AT Gold are now standard on the AT MAX. The adjustable threshold is now available so you can detect changes in audio to dig those ever so deep targets. You can now manually ground balance the unit, or use auto ground balance.
Included in the package is a set of wireless headphones with the built in Z-Lynk™ Wireless . Garrett has listened to it's customers and made significant changes to an already popular selling metal detector. I look forward to reading posts and seeing some great finds made with the new Garrett AT MAX!