'USB interface and rechargeable lithium-ion battery pack'
avweb.com
'a taxi map is available at the tightest screen ranges that accurately place you on indicated taxiways and help you find the active without going the wrong way.'
'Has an external antenna which is preferable for situations where open sky is limited.'
'This portable GPS navigator features a 256-color TFT display that's easy to read in bright sun along with a built-in basemap and auto routing to provide you with turn-by-turn directions to the marina for a day of boating.'
