Minute protrusions on the outside of the inner case reduce surface contact with the metal bezel. This reflects the design philosophy for the hollow case structure, which protects the module using point contacts and cushions exterior blows. Glass fibers are incorporated into resin for increased strength. The material's resistance to shock-induced breakage and bending protects the module from external shock. This case delivers outstanding shock-resistance. The bezel undergoes about 20 forging processes, then cutting and polishing. It is minutely crafted from a complex, highly uneven molding to a back surface shape that can affect its precision fit into the inner case. The surface is polished to a beautiful mirror and hairline finish. The 6900's iconic front button, having surpassed its merely functional role in controlling the backlight, gets a metallic makeover. It is grounded in precise design, balancing the button guards and in a shape and angle that is easy to press. The Triple Graph dials coordinate exquisitely with the LCD and face plate, whose mirror finish complements the metal exterior for complete design harmony.