Check the listing for details. SEAC Apnea Freediving Computer - Log and Real Time Data. Condition: New. Listed at 174.99 USD. Binding: Apparelmodel number: 1600030538000APart Number: 1600030538000ADetails: Seac APNEA is the new computer watch, entirely dedicated to the world of freediving and spearfishing. On the Seac APNEA computer you can disable all alarms, both visual and audible, while maintaining a continuous view of your session.