A:AnswerThese Sony speakers connect to whatever the device is you want to use them with via Bluetooth. They do not have HDMI ports. They do have a 3.5mm audio in port for connection via a cable. They also have a charging connection.
Hope this helps.
A:AnswerHi there, Yes, it is rated IPX7. The speaker has been tested to and maintains its operability when gently submersed in water to a depth of 1 m (3.2 ft) and left for 30 minutes. Ref: https://helpguide.sony.net/speaker/srs-xb12/v1/en/contents/TP0002133455.html?search=water -Sam
A:AnswerI had the same concern and was worried I might break something.
The strap eyelet opening is very tight initially, but you should be able to pull and slip the strap over the button piece. Basically unbutton the strap twice to remove it.
Yes, you can pair this speaker to your smartphone via Bluetooth connection.
Happy to help,