HECTO DRIVE 500XL (Front)* Maximum output of 500 lumens / Battery life of 20 hours in Femto mode * New housing with heat dissipation fins* Silicone strap* IPX7 water resistant* Integrated USB stick for cable-free chargingSTRIP DRIVE (Rear)* Maximum output of 150 lumens / Battery life of 57 hours in flashing mode* New 800 mAh battery* New way of attaching it to work with shorter seat posts with USB socket and cable* Wide angle optics for 270° visibility for maximum safety* Compatible with aero seat posts* Lightweight and durable* Co-molded design and IPX7 water resistant