Compatible with all Ocean Reef IDMs from the Space and Neptune lines, its reduced size and patent-pending placement inside the mask offer increased negative buoyancy of the system as well as comfort. Smaller and lighter than the VL, the Vesper does not require adhesive or screws and can be installed by the user with no training. It features an infrared sensor, SOS mode, charging via USB, and multipurpose case for protection of the unit during storage and transport. In addition, it illuminates the user’s
face, allowing for identification without blinding the diver.