Specification Material ABSNoise Reduction Rate 100 decibel Colors White BlackFunction Lasting battery life portable charging magnetic induction volume memoryScope of Use Daily work life and fitness exerciseCertification FDA CE FCCFeatures Long last battery the case can charge your earphones 4 5 times Small design better fit the ear provides a comfortable wearing Earphones come with 8 levels of volume 2 programs can adapt to different environments whether at home or in the noisy street all sounds can be heard clearly Package Included 1 x Charging Case1 x Pair of Earphones1 x USB Cable1 x Filters Replacing Tool1 x Cleaning brush 4 x Earplug