Stargaze - 10 ATM Moment - 5 ATM 5 ATM and 10 ATM refer to the amount of pressure a watch can withstand without leaking, with 5 ATM suitable for everyday use and 10 ATM suitable for more strenuous activities such as swimming or diving. This means you can wear your watch with confidence, knowing it won't be damaged by water. In addition, a watch's water resistance can also protect it from other elements such as dust and sand, making it an excellent choice for those who want a watch that can withstand the rigors of daily life.