Trident Instructor Size Underwater Writing Dive Slates (White, 6\ x 8\)
- Transmits GPS position to boats up to 34 miles using ais/DSC technology.
- 5 year Battery life (user-replaceable batteries/batteries not included).
- Diver depth rated to 425 feet (with cap closed).
- Included components: lifeline gps, proprietary tool for rewinding antenna.