FS2 provides a unique tilt angle of at least up to 35 degrees, making it easier to read and operate in most any position. With a floating magnet separate from the Compass Rose, the FS2 has a greater angle of operating freedom than conventional compasses. This means you can use the same Compass for both northern and Southern hemispheres, so perfect for traveling divers. Scratch-resistant and durable oil filled polycarbonate case. Highly luminous dial for easy reference in low light conditions. Side view window for easy and accurate navigation. Both available in wrist model or in retractor model for easy attachment.