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 rechargingSTRIP DRIVE (REAR) Max 150 lumens / 57 hour runtime in Flash mode New 800 mAh battery New mounting style to fit shorter seat posts with USB plug and cable Wide angle optics with 270 visibility for maximum safety Aero seat post compatible 
