Realspeed USB Charge Tail Lite 31.8
The Sleek design and functionality of the Realspeed Tail Lite, makes it the ideal rear light for the most concerned of weight weenies. Its USB rechargeable design, provides 20 hours of 20 lumens, and weighs in at a scant 28 grams.
Available in either 34.9 or 31.8 diameter options.