Purchased about 3 years ago. Selling because I bought something else and no longer use it. This is the INFINI LAVA I-260R (model number: LPF10700) USB rechargeable rear light for bicycles. It features a compact body and high visibility. Product Information Brand/Model: INFINI LAVA I-260R Light Source: 3 red LEDs Brightness: 15 lumens Power: Built-in rechargeable lithium-ion polymer battery Charging: Rechargeable via USB port on a computer, etc. (charging time approximately 2.5-3 hours) Size: 42 x 27.5 x 24.5 mm (body only) Weight: Approximately 15.2 g Mounting: Tool-free quick-release bracket (compatible with diameters of 19-32mm), or can be attached to belts, bags, etc. with the built-in clip.