At the time of writing, the Garmin TT25 is undoubtedly the gold standard for upland hunters. The TT25 is a huge improvement size wise compared to the older TT15, this newer unit is smaller, lighter and has a battery life that let's you hunt an entire long weekend without recharging. Despite this, the collar still feels big on puppies and smaller pointing dogs. This simple 'hack' lets you size down your TT25 even more, resulting in a better fit for those smaller necks.