This bike safety light is USB rechargeable--simply charges from your computer or any device with a USB port in 3 hours. Now you can wave goodbye to frequent battery changes. The super bright, lightweight and water resistant design makes this light a perfect choice for any cyclist.<br><br><strong>Features:</strong><br>With 4pcs super bright LEDs, provide more visibility and improve safety for your night riding.<br>Three lighting modes: High brightness (4hrs run time), Low brightness (6hrs run time), Flashing (8hrs run time).<br>USB rechargeable bike taillight. Simply charge the bicycle light from your computer or any device with a USB port. Only takes 3 hours to fully charge.<br>Lamp shell made of high strength ABS material, anti-scratch and durable to use.<br>Compact in size, light weight, IPX5 water resistant design.<br>Silicone mounting strap allows simple installation, suitable for 15-60mm seat post or other frames on your bike.<br><br><strong>Specifications:</strong><br>Material: ABS<br>Lumens: 200lm<br>Battery: 650mAh rechargeable lithium battery<br>Charging Time: 3 hours<br>Item Size: 9.5 * 2.5 * 2.3cm / 3.7 * 1 * 0.9in<br>Item Weight: 53g / 1.9oz<br>Package Size: 13.5 * 10.5 * 3cm / 5.3 * 4.1 * 1.2in<br>Package Weight: 88g / 3.1oz<br><br><strong>Pacakge Size:</strong><br>1 * Bike Taillight<br>1 * USB Charging Cable<br>1 * Mounting Strap