Water resistant : 1000M/3300FT,it is suitable for professional diving.
Helium escape valve : Because the movement may stop due to the pressure,this device can protect the movement when you are diving. After landing, once you press this device, the movement can work normally.
Sapphire crystal with Anti-Reflection coating and Anti-Fingerprint coating,it can prevent the watch from scratching and abrasion.
The luminous hands & dails,can let you read the time easily at the dark.
