Knog Blinder Mini Rear Light. Features: Plenty of illumination for being seen on the street, fits in your pocket 4 designs to choose from for adding personality to you ride Visible from up to 1000 ft away USB rechargeable Integrated USB-A connector for cable free charging 100% waterproof Up to 30 hr runtime Available in 4 unique flash patterns, 8 modes Straps fit 22 - 32mm+, XL strap fits up to 200mm diameter Specs: Model:Blinder Mini Square Rear Lumens:50 Modes:8 Rechargeable:Yes Color:Black Weight:17g