Battery : Front Light 4x AAA batteries(not included),Back light 2x AAA batteries(not included)Mode : Front light 2 modes ,Back light 7 modesHead Light Size ( about ) : 10 x 6.5 x 3.3 cmRear Light Size ( about ) : 7.0 x 4.0 x 3.0 cmNet weight : 90g

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SaySure Bike Bicycle Lights 5 LEDs Bike Bicycle Front Head Light SFFYOQQJO