1.ThefirstUSBHUBwithwatch/fishshapeintheworld2.Usb2.0highspeedinterface,supportstransferrateupto480Mbps.3.backwa***compatiblewithUSB1.1specification.4.plug-and-play,supporthotswappingfunction.5.4USBplugitemizethetwoside,andh***etheminiusbplugandpowerplug.6.youcanwantyourlogoprintinthewatchandverybeautifulandyoucanchooseittogiftsandpublicity.)