Night Provision LINE-120R USB Rear Bike Light Rechargeable - 120 Lumen COB LED Bicycle Back Tail Light Road Bike Mountain Bike BMX &#x2714; HIGHLY VISIBLE DAY OR NIGHT: Ultra High Intensity 30 COB LED's For A Full 180 Degree Visibility in Day or Night. Compact Slim Size, & Feather Weight. 1.4oz @ 120 Lumens; LINE 120F delivers the highest lumen output for its weight and slim size &#x2714; PLAN LONG RIDES: 6.3 Hour Max - Superior LiPo Battery - Never Worry About Ending Your Rides From A Faulty Battery. &#x2714; THE MOST VERSATILE BIKE MOUNT: Most Versatile Bike Light. Position LINE Vertically or Horizontally; Adjust LINE higher or lower with 2 clicks; Mount LINE on anywhere with 4 secure slotted holes in the stretchable rubber straps - Can Be Mounted On Helmets &#x2714; SAVE MONEY & TIME: Micro USB Rechargeable. Save money and stop buying expensive toxic batteries. No more errands to the store to shop for batteries. Charge quickly at any USB outlet at your convenience. Charge with PC, Laptop, Car, Power Bank, etc. &#x2714; WIN - WIN SITUATION: Night Provision&trade; Limited Lifetime Warranty Guarantee. A 100% no hassle, no questions asked, replacement or money back guarantee for up to 2 years free. Then after; a lifetime of labor free repair and parts at cost. We are so confident and serious about our products that we can back the LINE 120R with a 100% Limited Lifetime Satisfaction Guarantee 30 Micro COB LED&#039;s (120 Lumens) Side Visibility Versatile Fits 22-31.8 mm in Diameter Tool-less Quick Release Mount Adjustable Vertical &amp; Horizontal Mounting LiPo Battery: 3.7V 500 mAh Lithium Polymer Runtime: Up to 6.3 Hours Charge Time: 2 Hours Line-120 Bicycle Taillight USB Charging Cable 4 Slotted Adjustable Rubber Strap Mount Vertical &amp; Horizontal Adjustment - Rotate Left or Right Angle Adjustment - Flip Up or Down Fits 22-31.8 mm in Diameter Tool-less Quick Release Mount