Serfas Cosmos II 30 Lumens USB Rear Light

The Serfas Cosmos II Rear Light is a 30 lumen light that is simple and reliable for everyday riding. Serfas designed this light with 3 LEDs for easy visibility and gives you up to 4 hours of run time in flash mode. You can charge this light fully in just 2 hours and  it is also IPX3 Waterproof so that you can ride in wet conditions. The Serfas Cosmos II Rear Light is a perfectly capable rear light, while it isn't the brightest it is certainly bright enough for most riders.

Features

• 3 LED Design for Easy Visibility
• 30 Lumens with up to 4hrs runtime on Flash mode
• IPX3 Waterproof
• Charges From Dead to Fully Charge in 2 Hours
• Last Mode Memory