Completely re engineered both inside and out, the Triton 400 is the eight generation of handheld devices from Magellan and also feature the rugged, waterproof design and helpful features that outdoor enthusiasts need and expect. Expandable SD card slot, allows users to store additional maps, terrainand geocache data. Detailed uploadable maps. 2.2 5.9 cm QVGA full color display, for crisp, crystal clear graphics. Rugged and waterproof, built to IPX 7 standars, the Triton 400 can withstand a drop to concrete and submersion in up to one meter of water for 30 minutes. Battery powered. What's in the box Triton 400 GPS receiver, VantagePoint Software, quick reference guide and reference manual on CD.