Tree Ring LLC, founded in 2009 by forest ecologist Dave Wager, specializes in creating fine writing instruments and watches that incorporate the growth rings of trees, making them ideal for commemorating significant milestones. Products include customizable pens and watches, each unique due to the natural variations in the wood, sourced from sustainably harvested trees in Montana. The company's offerings are rooted in the science of dendrochronology, which analyzes tree rings to provide a historical context for each item.