The Underwater GPS G2 Topside is watertight, dust-proof and provides excellent protection against the elements. The integrated handle makes it easy to carry. This product is normally delivered as part of a complete Underwater GPS G2 system. But if you already own a Water Linked locator and baseline, you can purchase this product to get a complete system. ・ Pelican 1170NF Protector Case ・ Master-D1 positioning computer (mounted inside) ・ Master-D1 Interface Board (mounted inside) ・5m power cable ・Internal power cable with XT60 connector Range 100 ver, SKU: WL-21021-2-R100