Navitech Trolley Golf GPS Waterproof Case & 360 Degree Rotational Mount / Holder for the Garmin Approach G3 The trolley mount is 360 degree adjustable to enable horizontal and vertiocal viewing, The case will fit a trolley with a trolley with a diameter of 3cm and a minimum of 1cm The case is fully waterproof and is of very high quality Under a full 5 year warranty Will also fit scorecards and a mobile phone if required.