The Pairs swatches consist of 6 Ash dovetail joints with embedded electronics. Each of the six sets of Pin and Tail is identical (except in grain) in form and function–they differ only in the surface patina. Each Pair is treated in a unique way that gives it age and experience: one was put in the ocean for a month; one was divided between my wife and I–she wrote all over hers when she was missing me and I stained mine with tea and wine when I was away from her; one was chewed by our dog Bruno; one was distressed in a sandblaster; one was stained with iron and vinegar; and one was left perfect. The electronics allow the Pin and Tail of each dovetail to communicate wirelessly and by rechargable battery power. The halves chirp in patterns of call and response to each other when they are apart, they vibrate and chirp faster when they are near one another, and they are silent when connected.