The SureFire 2211 Wristlight was designed with the input of active duty police officers to provide hands free tactical illumination. The 2211 is attached to your support-side wrist, and automatically aligns with the two-handed grip on a pistol for excellent target illumination at close to mid-range. Its white light can be adjusted to three output levels: 300, 60 and 15. The highest can temporarily impair your targets vision and the lowest greatly extends battery life