The Bad Elf GPS gets rave reviews from the most demanding customers in military, commercial, and private aviation. More and more blue water and freshwater marine enthusiasts have chosen the Bad Elf GPS for their adventures. Instantly add GPS & GLONASS location support to your iPad Wi-Fi or iPod touch device with Lightning Connector. High performance 66-channel WAAS enables GPS provides latitude, longitude, altitude, speed, and GPS track. Accurate to 2.5m (9ft) up to 60,000ft and 1,000mph. Quickly acquire satellite lock without cell tower assistance. Hot start time in as little as 2 seconds.