What does it mean daily water resistant for wrist watch?

Daily water resistant for wrist watch means the watch can withstand low-pressure water splashes and rain, or brief underwater immersion only at low water speeds in static conditions. In general, a watch marked as "daily water-resistant" is rated at 3 ATM (30 meters) but this varies on the brand.

Note: A daily water-resistant watch isn't suitable for swimming or any water activities where the watch will come into contact with any significant water pressure.