Tech Savvy Optics specializes in night vision service. We will meticulously inspect and clean your PVS14 or monocular. We will perform a leak down test on your unit and nitrogen purge it to factory specifications. Select this option for all service including power supply, lens, and housing swaps. 1 year warranty on all part swaps and a lifetime warranty on our labor. Send us your dirty units, we will clean them, get them back and ready for use in the field.