The Magellan eXplorist 400 features mapping capabilities and unlimited storage via optional secure digital (SD) cards so you can take as many maps with you as you want to. Add detailed street maps, topo or lake maps using optional Magellan MapSend software. The high-speed USB data port makes downloading information easy and the Geocache Manager software enables you to download caches directly to your eXplorist 400.eXplorist 400 has 8 MB of built-in maps and 8 MB of internal memory to save 5 track log files, 20 routes and 500 points of interest, but you can save as many as you need to optional SD cards.Slip your compact (2.1 in x 4.6 in) eXplorist 400into your pocket and let it guide you on every outdoor adventure. Magellan TrueFixT technology provides superior accuracy and reliability, giving you the freedom to explore without concern of getting lost.Expandable Compact GPS PowerhouseUnlimited SD Card ExpandabilityYour eXplorist 400 features SD card compatibility for unlimited memory expansion. Use optional Magellan MapSend software to add detailed street maps, topo or marine charts to any number of SD memory cards (soldseparately).USB data portTransfer map data from your PC to your eXplorist 400 with the high-speed USB data port.Area CalculationWant to find the distance between three or more points of interest that you plan to hikearound or the area between them? Simply select the points of interest on the map and the eXplorist can determine the area between them and the perimeter around them.Li-Ion Rechargeable BatteryThis Li-Ion rechargeable battery pack cankeep your eXplorist continuously powered-up for up to 14 hours. Recharge your battery directly through your receiver again and again without reducing its performance.TrueFix Technology - Accurate & ReliableTrueFix GPS technology takesadvantage of 14 parallel channels, supported by WAAS and EGNOS Satellite-Based Augmentation Systems for fast signal acquisition, minimal signal loss and reliable accuracy to within 3 meters.Geocache ManagerDownload Geocache coordinatesfrom Internet sites and use them on your outdoor adventures. This unique feature makes managing coordinates even easier with a PC-style file system. You don't have to be a geocacher to appreciate the Magellan Geocache Manager.Built-inmappingWith 8 MB of built-in North American maps it's easy to navigate around roads, parks, waterways and to find airports and other points of interest.Easy-to-useOne-button access takes you directly to all of the most importantfeatures. Intuitive operation with keypad and joystick control adds even more fun to GPS navigation. First-time user can easily navigate with the eXplorist 400.LanguagesNo matter your language, there's a good chance the eXplorist speaksit. Choose from English, French, German, Spanish, Italian, Swedish, Finnish, Portuguese, Dutch or Norwegian.Track LoggingStore up to 5 track log files, each with 2000 track-points to the internal memory and store an unlimited amount oftrack log files to optional SD cards, to easily find your way to your favorite spot again and again.Four navigation screensView speed, direction, distance to destination and all the GPS information you need on 4 easy-to-read navigationscreens.No service feesYour eXplorist 400 is ready to go with no service fees and no activation fees, so go ahead, use it all the time.Satellite statusMonitor the GPS satellites tracking your position and getinformation about their status.Built to perform on the most challenging and rigorous adventure.Pocket-sizedDon't let the size fool you. eXplorist 400 is packed with real GPS power and cool features. But at 2.1"" x 4.6"" x 1.3""and only 4.6 oz you can take it anywhere.Large backlit displayEasily view all the GPS information you need to make your adventure fun and safe, even at night. The amber glow of the backlight protects your vision at night so you can seeboth your eXplorist and the path in front of you.Rugged constructionRubber armored, impact resistant plastic lets you to confidently take your eXplorist 400 on every adventure.WaterproofeXplorist 400 is sealed to IPX-7specifications, you don't have to worry about getting it wet.