How do I use the functions of the watch's three dials?

Dear customer, hello, the following is how to use the three dials, 1/10 Minute chronograph dial(above): 1 circle = 2 Seconds; Second chronograph dial（left）: 1 circle = 1 minute; Minute chronograph dial（under）: 1 circle = 60 minutes. If you have any problems , please feel free to contact us via Amazon email, we will be at your service at any time.

Do all chronograph functions work? Or just decorative accessories?

I like this product and all three dial functions work, not just decorative. my favorite is the timekeeping function,easy to Read,very practical!!!

Is this watch waterproof?

Dear customer，This watch is 30M waterproof, can withstand sweat, accidental rain and splashed water.

Does this have a box? I want to buy it as a birthday present for my boyfriend

Dear customers, This watch will come in a nice box. If you have any questions, please feel free to contact us , we will be at your service at any time.