Max 500 lumens / 20 hour runtime in Femto mode New housing with stylized heat dissipation fins Silicon rubber strap IPX7 water resistant Integrated USB stick for cable-free rechargingStick Drive (Rear) Max 30 lumens USB Rechargeable and magnetic clip-on mount. Wide angle optics with 270° visibility for maximum safety. Aero and round seatpost compatible. Slim design, lightweight and durable.