The Phantom Aquatics Italian Design Compass is an oil filled mechanism compass, robust and accurate for underwater navigation that ensures accuracy and durability for a long time. The convenient side window allows quick reference of large, easy-to-read bearing indicators on a luminescent display for superior-sight accuracy. The luminous dial of the compass is designed with black luminous graphic to make quick work of compass direction, especially in dim light. The compass bezel has compass headings in 30-degree numbered increments and indicator marks for every 10-degrees. Bezel has twin heading indicators for alignment of compass course and a lubber line across the compass face. Compass case is manufactured from a scratch resistance polycarbonatefor strength and durability. Smooth movement across a wide range of motion is provided by the specially designed compass needle card and the powerful magnets. Available in Four Different Styles: 1. Standard Wrist Mount, 2. Deluxe Wrist Mount Hose Adapter, 3. Bungee Wrist Mount, 4. Retractable Clip Mount.