Halcyon Photon Package 1 pairs two full-size Photon dive lights in a padded travel case, a common setup for technical and cave divers who carry two backup lights. Each Photon uses a Cree XM-L2 (U4) LED with a narrow 9-degree beam and runs on three C-cell alkaline batteries, which are included, delivering about 850 lumens on high for roughly 3 hours 20 minutes or 550 lumens on low for about 5.5 hours. With optional 26650 lithium-ion cells the output reaches 1200 lumens.
Both lights are machined from AL6061-T6 aircraft-grade aluminum with a Type III hard-anodized finish, tempered glass lens, twist on/off switch, and triple O-ring sealing rated to 200 m (656 ft). Regulated output, overheat protection, and reverse-polarity protection are built in, and each light has an engraving area. Each light measures 21 cm (8.27 in) long with a 5 cm (1.97 in) head. The package includes the travel case, lanyards, and three spare O-rings.
