This Huawei Honor Band 4 Running Version Bluetooth Smartwatch is based on Bluetooth technology and supports Android system 4.4 version or above, iOS system 9.0 version or above system. Features six-axis sensor, which brings higher accuracy. Not only can wear it on your wrist, but also on your shoes. It can help you to take steps to improve sleep quality. The soft TPU band is comfortable and skin friendly, perfectly fit your wrist. It will be a wonderful companion for your daily life.