The Bell Arella X50 USB Tail Light is a high-quality bike accessory that provides excellent visibility and safety while riding. This USB rechargeable tail light plugs directly into a USB port, eliminating the need for a cable. It features three modes - steady, strobe, and flash - to suit different riding conditions. The rear and side visibility ensure that you are visible from all angles. The fuel gauge indicates the remaining charge, with green indicating 75% charge, orange indicating 25% to 75% charge, and red indicating a brightness of 30 lumens. With a run time of up to 1 hour on steady mode, up to 3 hours on strobe mode, and up to 4 hours on flash mode, this tail light is perfect for long rides. Stay safe and visible with the Bell Arella X50 USB Tail Light.