Alta syncs automatically and wirelessly to computers and 200+ leading ios, android and windows devices using bluetooth 4.0 wireless technology. syncing to computers requires internet connection and usb port. syncing to mobile devices requires bluetooth and internet connection. syncing range: 20 feetwater resistance: alta is sweat, rain, splash proof. you can wear alta in the shower, but we recommend rinsing and drying it afterwards because it's best for your