Feature●Freedive Mode Main displays Depth and Elapsed Dive Time with access to either a pre-set countdown timer or lap timer●User defined surface recovery timer, repeating elapsed dive time alarm, repeating depth interval alarm and 3 max depth alarmsDescription The Oceanic F.10 was designed by freedivers for freedivers. It has many freediving specific features including a wide variety of convenient alarms. Its ideally suited for all types of breath-hold diving, spearfishing or freediving, recreational to competitive.