The Bisley Active Electronic Ear Defenders feature independent volume controls allow you to find a comfortable volume. There are no external wires to get in your way and they have slimline fully folding cups. Powered by 2 x AAA batteries which are included and can be used alongside behind the ear style digital hearing aid.Ear Defenders FeaturesBisley electronic hearing protectionIndependent volume controlsNo external wiresSlimline fully folding cups2 x AAA batteries includedBisley Ref.MPN: BIMACColour: GreenSizes: One SizePM Ref: 982345