Separate battery case specially designed for caving. Die-cast unibody headlamp. CREE XM-L2 U2 LED. Max output 1000 lumens. Max run time 220 hours. 182m beam distance. Single switch controls five brightness levels and three special modes. Flood lighting system produces a wide 90 degree beam angle. Battery case can serve as a power bank to charge two devices simultaneously. Elastic nylon headband. Requires (2) Lithium batteries (not included). Boxed with hanging tab.