OTTO Engineering designs and manufactures innovative spatial audio push-to-talk hubs, tactical ear-pro, battle tested navigation systems, speaker mics, covert surveillance kits and wireless intercoms. Mission critical communication equipment for military, SWAT, LEO, executive protection, covert operators, fire and rescue. For over 60 years, OTTO’s products have been recognized for excellence in the most demanding environments worldwide. www.otto-comm.com. (less)