When sound waves come into contact with air it causes a dissipation of the waves, and so a special ultrasound gel is placed on the skin to ensure maximal contact between the treatment head and the surface of the skin and to provide a medium through with the sound waves can travel.
To delete your data from the Band and Microsoft Band, follow these steps: 1  Step 1: On your Band, tap Settings Tile > Power 2  . Step 2: Swipe left, tap Reset Device, and tap Yes when asked if you want to erase all data. 3  Step 3: Open the Microsoft Band app, and tap Menu î > My Microsoft Band > Unregister your Band.
Open you Camera Roll, tap the arrow button (top right), tap all the photos you want to delete, tap the Delete button at the bottom. (There isn't a delete all button.) Photos synced to your phone from your computer have to be deleted using the sync process (by deselecting them on the Photos tab in iTunes and syncing).