Adjustable Phone Mount.  Designed for scooters, rollators & knee walkers.  Works for most mobile electronic devices.  360 degree swivel lockable joint.  Easy release button.  Foam padded ratcheting clamps - secure mounting clamp.  ABS Construction.  Holder measures 2.5" X 4.25" X 1.5".  Holder expands to 5 1/8".