The ringtone of Apple Watch cannot be customized.

Apple Watch has a variety of personalized watch faces and customized settings. On the customized watch face, you can add practical information such as weather and next activity. Can display the user's heartbeat information. When used with an iPhone, Apple Watch will deviate from global standard time by no more than 50 milliseconds.

Extended information:

Watch functions include:

The watch has built-in UBER. Moreover, the watch can directly unlock the room door, and the Passbook can be used as a boarding pass to watch videos, images, etc. remotely.

Chinese applications: WeChat, Weibo, Alipay, Meipai, Ctrip, etc. However, the Alipay wallet that is adapted to Apple Watch only retains three functions: Yu'e Bao, payment code, and exchange rate conversion. Other applications will also be simplified accordingly, retaining only functions more suitable for wearable devices.

Apps available for Apple Watch can be downloaded from the App Store. The battery life of Apple Watch is all-day and can be used for 18 hours. Apple does not describe much about the battery and has some reservations. It should be a brand-new technology.

Baidu Encyclopedia-Apple Watch