Posted on June 24, 2021 by Fraser IOTA Watch teardown 1 Here we see the iota watch with its back cover removed. The 3.7V 380mAh lithium cell is removeable, But you don’t have to, it can be charged while in the watch by simply plugging in the watches USB charge cable. Post navigationPrevious post: New WebsiteNext post: IOTA Watch teardown 2