Photonis WP 4G Echo matched tubes. Upgrading to L3 20UA. Maybe 40hrs on these. Purchased new from Glynn Sziraki in a set of DTNVG. 1 year of factory warranty left. This is transferable. Looking to get $3000 net for pair. I work a lot, and these have very low hrs. Any questions feel free to PM me. ITAR......don’t ask.