TRU SPEC H2O Proof Gen2 ECWCS Parka Holster Accessories impact chemical resistant Serialized for personal impact chemical resistant Serialized for personal identification One CR123 battery is included The TCM 550XL Compact Tactical Weapon Mounted Light uses a super bright LED rated at 550 lumens working in conjunction with a precision engineered total internal reflection (TIR) lens to create a bright white beam of light rated at 136 meters Open design is ideal for law enforcement and security professionals who need to quickly access their ammunition waterproof breathable material to keep you dry and comfortable no matter what the weather throws at you