***** Best Quality Guranteed. *****Magnetic Weatherproof Case - Provides FIRM Magnetic Mount which is the key to knowing the GLCase will remain securely attached *****The sturdy and waterproof design is perfect for long term GPS tracking, suitable for use on moving vehicles outdoors - keeping the interior safe from moisture and corrosion *****Compatible with: GL-200, GL-300 (and all compatible models) and any other units that will fit inside of the secure casing *****Includes 2 Powerful Magnets to Attach to Any Flat Metal Surface *****This extremely cover design measures only 3.5" x 1.4" x 2.2" and is built with durable PC and ABS plastics for long term protection and monitoring