Suitable for bicycle, jogging, climbing, baby trolley/stroller, wheelchair. Suitable for any bicycle to give alert in bad weather. Provide safe riding.Front headlight provides a powerful beam of light. Back light contains 5 bright LED lights and has 7 different modes of operation.Shine or rain, summer or winter, any weather condition, any time enjoy enhanced visibility and you will be safe at any time of the day. Waterproof You do not need to worry that it will get wet in the rainy days and will be broken. The water-resistant case is designed to withstand the most extreme weather conditions including rain, snow, heat and dust. No damage here Specifications:Material: plastic.Color: show as pictures.Front light:Size: 97x65x33 mm.Power supply: 2 * AAA Batteries (batteries not included).Suitable for 25mm diameter bar.Two operation mode: Continuous or Flash.Reacr back light:Size: 70*40*30mm.Power supply: 2 * AAA Batteries (batteries not included).Suitable for 25mm diameter bar.Operation mode: 7 Modes.Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package included:1 x 5 LED Bike Head Light.1 x 5 LED Bike Rear Light.2 x Brackets.