... :4*AAASpecifications5 LED bicycle light set contains 5LED front light and 5LED back light ,with power beam,approved ... light ,with power beam,Material;ABSBattery:4*AAAFeature:5 LED,Power beam,waterproof,quick release bracket,trible brightness than similar productand multifunctional ... as bike light,torch,diving...we have various LED bike light,LED bike lighting, ...