The Momentum Supernova outdoor alarm watch combines a clear, legible dial, titanium case and easy-to use alarm. The 44mm case is ultra-light and carefully shaped to fi t the wrist comfortably. A new ceramic resonator makes the alarm loud and clear. The new technology V-Series alarm movement boosts battery life to an impressive 5 years. The numbers and hands feature the latest Swiss Superluminova technology, for outstanding legibility, even in the dark with sapphire crystal. Rated to 100m/330ft.