Duracell Bicycle Light Set This Duracell battery-powered set has 2 LED lights and provides bright light. The set comes with a holder and two CR2032 batteries. The front and rear lights have a constant light and flashing light function. The set can withstand a knock and is splash-proof. The included batteries provide up to 41 hours of light. Color: Black/Gold Material: Plastic Dimensions: 49 x 33 x 21 mm Including holder and two CR2032 Batteries