2016 7tm Power XR
7tm binding.
The Power 2 with a heel spring about 25% stiffer (red) and a reworked heel part, which gave the XR suffix. Telemark-Pyrenees dates the change to 2016 and a retailer catalogue listed an STI Power XR in April 2015. Retailers describe it as the only releasable 75 mm telemark binding still sold; DIN 4-11, about 1380 g a pair.