Serfas Thunderbolt 2.0 Combo (120 / 50 Lumens)

Features:

• Most Popular Combo Kit
• Headlight: 120 Lumens*
• Tail Light: 50 Lumens*
• Auto Safe Mode Extends Runtime An Additional 45 Minutes
• USB Rechargeable

• 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