specification: _x000D_Item Type: Hearing Aid Accessories_x000D_Material: Silicone _x000D_Scope of Application: Box type behind the ear hearing aid_x000D_Usage:_x000D_1. Cut the excess tube along the red line_x000D_2. Insert the tube into the ear hook_x000D_3. Gently open the battery cover_x000D_4. Plug the new battery into the lid and start working_x000D_5. Adjust NH and volume control to the appropriate position_x000D_6. Insert earplugs into your ears Features: 1Equipped with three models of ear plugs, users can choose according to the size of the ear hole. 2Eartips domes with sound tube can be clipped to the right length according to the length of the user's ear. 3The accessory helps to hear sounds more clearly, easy and convenient to use. 4High quality silicone material manufacturing ensuring maximum durability. 5Suitable for box type behind the ear hearing aid, wonderful replacement accessory. PackageList: 30 x Earplug 10 x Eartips Domes + Sound Tube