JUMO CYLY Mens Sling Bag, Leather Sling Bag with USB Charging Port Waterproof Casual Daypack Chest Crossbody Bag

Q: How many 12 oz beer cans can u fit in the small bag?

there is 1 large bag that will hold, maybe 6. the 1 smaller would not hold any.

Q: Can the buckle on this chest bag be opened?

Yes, it can be unbuckled to fully get into the main zippered compartment of the bag.

Q: The port on the side of the seems to missing the charging port?

Hello! My bag didn't come with a true charging port as said, but if you have a mini portable battery charger you can run your cable into the port slot and charge whatever needs to be without being in the eyes of others. I like that better not knowing who's watching your belongings. Enjoy your Sling Bag!!