Black Diamond Spot (BD81051) This model packs a high 130-lumen output and the multi-functionality of the Storm into a compact body. Features a PowerTap function to instantly switch between current and maximum brightness. PowerTap Technology 75% brightness in both distance and proximity modes Dimming (increase/decrease light), strobe, and night vision Lockout function to prevent accidental activation 3-stage battery life meter IPX4 (protected against splashing water from any direction) Battery-powered Feel free to ask any questions.