Maximize your cycling safety and convenience with our Bicycle Headlight Taillight Set, which doubles as a phone charger thanks to its solar-powered design. Universal USB output ensures compatibility with your devices, offering a reliable stream of 5V and 0.5A current. Benefiting from an inbuilt 2000mAh high-quality, rechargeable lithium battery, this environmentally friendly light saves you money while being safe and efficient. The front light emits up to 350 lumens with an effective distance of 600ft, featuring 4 lighting modes plus an intelligent light perception control mode—simply click the button to switch. Additionally, it includes a 140 dB loudspeaker, with 5 distinct sounds easily changeable by a long press, ensuring you're heard as well as seen. The unit is not just waterproof but also highly adaptable to your bike, with horizontal and vertical mounting options and a 45-degree angle adjustment ensuring optimum visibility. Install and remove effortlessly for a hassle-free experience every time you ride.