The Spot 400-R headlamp is powered by a rechargeable Li-ion battery, which is very practical if you are regularly out and about. Its 400 lumens of power allows you to light up to 86m, and its light beam is adjustable short range, long range, dimmer, flashing, and night vision (red light). This lamp features PowerTap technology, which allows you to instantly switch from maximum intensity to modulated intensity with a simple tap of your finger. Its elastic headband, made of recycled Repreve fiber, is comfortable on your skin. It also features excellent dust and water resistance. Technical specifications: Maximum intensity: 400 lumensRechargeable: Powered by built-in 1500 mAh Li-ion battery with micro-USB charging portBuilt-in battery status indicator showing percentage of batteryNight vision: red lightPowerTap technology: allows you to switch from full intensity to dimmed intensityLocking mode to ensure it doesn't light up in your bagIP67: waterproof tested to operate under 1m of water for 30 min, and maximum dust resistanceElastic headband made of recyclable and comfortable Repreve fiberBattery life: 3 hours 45 minutes at full power Headlamp Black Diamond ---Spot 400-R Octane