Serfas Thunderbolt 2.0 TBT-120F Head Light – Clear

Features: Super Bright (120 Lumens) *Daytime Flash Last Mode Memory Auto Safe Mode USB Remote Switch Compatible USB Rechargeable Up to 23hrs Runtime Aero Bracket Compatible Specs: Solid Modes: High (60 Lumens): 1.5 hrs, Medium (40 Lumens): 2.5 hrs, Low (20 Lumens): 5.5 hrs Flash Modes: *Daytime Flash (120 Lumens): 23 hrs, High Flash Slow (60 Lumens): 12 hrs, High Flash Fast (60 Lumens): 7.5 hrs, Low Flash (25 Lumens): 18.5 hrs, Auto Safe Mode Extends Runtime an Additional 45 Minutes Weight: 40 Grams with Bracket User Replaceable Battery: Lithium Polymer, 500 mAh