This is a set of two ReyLight LANapple flashlights: a titanium model and a brass model. Both use Nichia 519A 4000K LEDs. They are new and unopened (see photo 1). They run on a 14500 lithium-ion rechargeable battery or a single AA battery/Ni-MH battery. The 14500 battery, which can be charged directly via USB-C, is included in the body. Mode settings are available. Group1: (Moonlight)-2%-20%-100% (Default) Group2: (ML)-10%-40%-100% Group3: (ML)-2%-10%-50% Group4: (ML)-50%-100%-strobe-SOS Instructions for changing the settings are written here: https://reylight.net/pages/programming-guide For reference, photos 2-5 show an opened copper model. I have many copper flashlights, but this one is exceptionally beautiful. The titanium and brass models are likely the same.