Serfas TL-STN Rear 20 Lumen Seat Stay Black Light

Features:

Center 1/2 Watt Super Bright Red LED w/ (6) 4mm Red LEDs
Versatile Rubber Mounting Straps - Will fit virtually any bike or helmet!
Durable Silicone Wrapped Body
Versatile Mounting
Water Resistant

Modes:
Steady (20 Lumens): 33.5 hrs
Flashing (20 Lumens): 36.3 hrs
Strobe (20 Lumens): 35.4 hrs
Alternating Flash (20 Lumens): 58.4 hrs
Weight: 36 Grams w/ Bracket
Runtime: Up To 100 hrs
Battery: (2) CR2032 (PLEASE NOTE THAT SOME OF THE LIGHTS MAY COME WITH A FLAT BATTERY AND NEED TO BE REPLACED)