Elasticated headband with sewn in durable reflective text for safety and silicone gripper strip for security. Can be used with headtorches, support cells and helmet lights (brackets required).Compatibility: HT-500, HT-100, RAW Pro and Verso, Link, Link+, Switch, Sirius, Joystick, Axis, Diablo, Equinox. 1.7Ah Support Cell, 3.1 Ah Support Cell and 3.4Ah Support Cell.