This bracelet is really good for parties! I attached it to a harness and looks really cool. The problem? That I ordered online from a different country and I received it without a battery even I chose the battery option. Beware that attaching the battery is not a trivial task, you will need to get it soldered to the circuit which is not something I was expecting to do. I do not have much knowledge about electronics and would recommend the seller to give more information about the product (specially for international buyers) as there might be other people in the same situation as me.
So there's no adjustable strap; it's a strip of LED lighting with a white fabric sleeve. It doesn't look like the picture on the site. I'd like to post a photo but not an option. Also I didn't know it wouldn't come to UK without a battery as that wasn't an option when I bought it. So they've turned up without batteries and no response as to my further question. I haven't even asked for a refund as admire small sellers. Mark L
The SHD pin is grounded, and you need to be able to toggle it high and low to power up the IC. So you will not be able to turn on this device as it is currently configured. Took me a week to figure this out with responses to my inquiries about whether this device had actually been tested. I assume that it wasn't.