AltimeterOne - A rechargeable digital altimeter for trained raptors, rockets, planes, and kites that reports the peak altitude of each flight on an LCD display using a highly sensitive atmospheric pressure sensor. Its tiny size and ability to ride along make it the most versatile altimeter on the market today. Choose the leather bewit size for your hawk--3 sizes available.

http://www.westernsporting.com/mm5/m...tegory_Code=A1