Parlent introducing POSEIDON. The first series from Wavemaster Line-Up. As the name implies,  We want our new collection to be your companion when adventuring in the ocean.QUARTZ MOVEMENT 10 ATM (Poseidon has power 100-meter durability in the depth of the sea) LUMINOUS (GLOW IN THE DARK) WATERLOCK SYSTEM Function : Stopwatch, Date It is powered by Miyota Japan Movement as the main engine with 316L stainless steel for durability.