Autonomous Bivouac mode: 21 hours / Fishing mode: 7 hours / Optimal mode: 3 hours / UV Moon Concept mode: 3 hours 45 Visual Efficiency Bivouac Mode: 15 m / Fishing Mode: 35 m / Optimal Mode: 60 m / UV Moon Conc Mode. : 5 m Resistance Resistant to strong splashes of water (IPX5) and shock Easy to use Lighting control with 2 ergonomic buttons. Washable headband