Built for long runs that start early or push past the daylight hours, the USB-rechargeable Black Diamond Sprinter 275 headlamp emits 275 lumens of power, making it ready for any trail in any weather.. . ??. . . Brightness memory allows you to turn the light on and off at a chosen brightness without reverting back to full or mid-power. Runs on the included 1800mAh rechargeable battery or standard AAA batteries (not included). PowerTap??Technology allows instant transitioning between full and dimmed power. 3 LEDs with 6 settings and multifaceted optical lens design. Red taillight strobe with on/off programmability for visibility in urban areas. Perforated elastic headband provides excellent front/back balance for running. Battery meter. Imported. Bulb Type: LED/red LED. Red Light Mode: Yes. Beam Type: Flood. Max Light Output (Lumens): 275 lumens. Max Beam Distance (m): 50 meters. (Low) 8 meters. Brightness Levels: Variable. Strobes: 1. Average Run Time: High: 2 hrs.; Low: 4 hrs.. Regulated Output: Yes. Batteries: Rechargeable??Lithium ion. Dimensions: 4.7 x 3.5 x 1.8 inches. Weight With Batteries: 3.7 ounces. 793661448822 34597600030 620652