4。Features.........................................................................................................................................................13 4.1.Alarms, warnings, and notifications............................................................................................ 13 4.2.Altitude diving..................................................................................................................................14 4.3.Ascent rate....................................................................................................................................... 15 4.4.Battery................................................................................................................................................16 4.5.Bookmark..........................................................................................................................................16 4.6.Ceiling broken................................................................................................................................. 16 4.6.1.Algorithm lock...................................................................................................................... 16 4.6.2.Warning: Ceiling broken .................................................................................................. 17 4.7.Clock...................................................................................................................................................18 4.8.Calibrating compass........................................................................................................... 18 4.8.2.Compass........................................................................................................................................... 18 4.8.1.设置偏差................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 19 4.8.3。Locking the bearing........................................................................................................... 19 4.9.Customizing dive modes with Suunto app............................................................................. 20 4.10.Decompression algorithms....................................................................................................... 20 4.10.1.Suunto Fused™ RGBM 2 algorithm................................................................................ 21 4.10.2.Bühlmann 16 GF algorithm............................................................................................ 22 4.10.3.Diver safety........................................................................................................................24 4.10.4.Oxygen exposure.............................................................................................................24 4.11.Decompression dives.................................................................................................................. 25 4.11.1.Last stop depth................................................................................................................... 27 4.12.AIR/NITROX模式..................................................................................................................................................................................................................... 30 4.16.2。Deco profile................................................................................................................................... 28 4.13.设备信息................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 29 4.14。Display.............................................................................................................................................29 4.15.Dive history....................................................................................................................................29 4.16.潜水模式..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 30 4.16.1。量规模式............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 31 4.17。Dive planner................................................................................................................................... 32 4.18.Flip display..................................................................................................................................... 32 4.19.Gas consumption..........................................................................................................................32 4.20.Gas mixtures.................................................................................................................................33