My review is for the stainless steel band version. I own an unlocked Sony Ericsson Z710i, for which this product was intended. I don't think it's ready for prime-time. The watch is very large on my big wrist, so I can't imagine smaller guys wearing it. It seems unnecessarily bulky, which means future versions will be much smaller and more wearable. The stainless band is cheaper and more flimsy than watches half the price. This is a Fossil product, so I had higher expectations for the fit and finish. However, the real problem here is with the operation. The interface is difficult to learn. The watch does NOT stay paired to the phone (when fully charged) and it is necessary to keep repairing both the watch and phone (multiple steps for each), which eliminated any convenience value. The watch vibrates when a call is received. This uses valuable energy and takes up space in the watch. Phones have ringers and vibrate, so they should make a smaller, better watch without the buzzer mechanism. I returned it within two days, and I'll wait for the product to evolve.