Serfas Seat Stay Rear Bike Light - 2013 Overstock - $8.73

Being seen is key to being safe when you're biking at night. The Serfas Seat Stay rear bike light shines a bright red light to catch the eye of oncoming motorists from 500 yds. away. Light attaches quickly to the seatstay on your bike; can also be attached to nearly any other tube on most bikes. Bright 0.5-watt red LED and six 5mm red LEDs operate in steady-on, flashing and strobe modes; entire body illuminates for excellent visibility. Water-resistant silicone body stands up to rainy day rides. Serfas Seat Stay rear bike light operates on 2 CR2032 lithium batteries (included). Overstock. - $8.73