Serfas Quasar Tail Light
Built-In Belt or Backpack Clip. Bracket Designed to Fit Multiple Applications Including Aero-Style Bars. Can be Mounted Horizontal or Vertical on Bracket. USB Quick Charge in 3.5 Hours.
Modes: High (25 Lumens): 2.5 hrs, Low (10 Lumens): 5 hrs, Flash (25 Lumens): 5 hrs. Weight: 46 Grams with Bracket. User Replaceable Battery: Li-Polymer.