3 Axis Compass / WAAS-enabled for accuracy within 3 meters / Rugged rubberized housing / Waterproof to IPX-7 / Uses 2x AA batteries / Supports SDHC Have you lost your direction? There are many things to turn to. The most logical thing is a GPS device. DeLorme Mapping PN-40 Earthmate Handheld GPS uses similar technology as those devices you find in many cars buts its designed for walkers, hikers, and bikers. Imagine hiking in the woods and losing the trail. Youre visiting a city and youve lost track of the street youre on. View the Delorme Earthmate PN-40 and youll find your way. Finding your direction could never be simpler. The DeLorme Mapping PN-40 Earthmate Handheld GPS is perfect for those areas where you dont know where boundaries and resources are. Just take it with you - everywhere - and you wont be lost again. # DeLormes blazing fast, feature-rich handheld GPS - built upon the PN-20s rock-solid design for unbeatable reliability in challenging outdoor conditions. Topo USA 8.0 Software with complete U.S. Topo and street maps included - no extra purchase required. Super high-sensitivity 32-channel Cartesio chipset by ST-Microelectronics delivers near-instantaneous signal acquisition and ConstantLock satellite retention # Dual-core processor for rapid screen re-draws, even with large aerial imagery files # 500MB onboard Flash Memory - Slot on unit accepts Optional SDHC memory cards for additional Storage capacity # 3-axis electronic compass with included accelerometer that performs when held in any position - while in motion or standing still # Sensitive barometric altimeter for reliably accurate altitude readings # Download Data directly to SD card while in the receiver # Fast USB 2.0 data transfer to internal memory or SD card in device # More detailed onboard base map data for the U.S., now with secondary and connector roads (along with major highways and thoroughfares for the entire world) # 65K-color daylight-readable TFT screen for clarity in any light conditions # Pre-loaded secondary and connector roads (US only) # Pre-loaded worldwide highway / major road base map # Holds up to 10 tracks (10,000 points per track) # Holds up to 1,000 user-defined waypoints # Holds up to 50 routes # Topo USA 8.0 software included - no extra purchase required # Displays aerial imagery, 7.5-minute USGS Quads, and NOAA nautical charts # Dimensions: Width 2.43" x Height 5.25" x Depth 1.5" PRODUCT SPECIFICATIONS Card Slot for upgrades Yes Computer Connectivity SD Interface GPS Style Handheld Included Map United States