As per the shared design, the smartwatch is fixed in to the bracelet due to its curved back. With this the smartphone will be used as the dialpad of the smartwatch once fixed in to the bracelet.
Recommended: 10 Google Chrome Apps You Must Checkout
Anyhow, we dont have enough information on how the smartphone will be attached to the bracelet but is seems that the bracelet will have some kind of locking system to keep the large smartphone intact.
Also, LG digs the flexible curved screen design, and both the G Flex and the G Flex 2 feature both OLED screens and bodies that curve and bend.
Components like the primary system-on-a-chip, the battery, and the casing would have to be just as flexible as the screen and capable of standing up to thousands of repetitive bends.
Right now we haven't seen anything close to production designs from OEMs that would fill that need, so the idea is several years away at least. LG applied for this patent in January of last year.