This is a pair of front and back bike lights. There are really bright which means they keep the rider really safe. They are USB rechargeable for convenience as well and the front light can work for 4-16 hours depending on light mode once fully recharged which can be done using a power bank, phone charger or computer. The front light has a wide smooth beam which lights the way and is visible up to 650 feet. The lights can be rotated so they can be adjusted to point in the required direction and they can easily be detached from the mounts for charging. They are also waterproof and impact resistant.