Lite Drive 1000XL (Front)* Max 1,000 lumens / 87 hour runtime in Femto mode* New housing with heat dissipation fins* Silicon rubber strap* IPX7 water resistant * Remote switch compatible* Fits 35mm barsStick Drive (Rear)* Max 30 lumens * USB Rechargeable and magnetic clip-on mount.* Wide angle optics with 270å¡ visibility for maximum safety* Aero and round seatpost compatible* Slim design, lightweight and durable* Magnetic clip-in mount* IPX7 water resistant