Set of lights Lezyne HECTO DRIVE 500XL / FEMTO USB PAIR comprises of Hecto Drive 500Xl which is a compatible front light with aluminium body and light intensity of 500 lumens, and 8 output modes with a battery life of up to 20 hours and charging through USB cable. The back light FEMTO USB is a small lightweight light that charges through USB, has a IPX7 waterproof rating, and light intensity of 5 lumens with 5 output modes.