This earwax filter is waterproof and oil-resistant, which can prolong the life of your hearing device by preventing earwax or water from being trapped inside. Mini size can only fit for RESOUND hearing aids._x005F_x000D__x005F_x000D_Features:_x005F_x000D_1.Waterproof and oil-resistant filter, can prolong the life of your hearing device by preventing earwax or water from being trapped inside._x005F_x000D_2.Made of quality material, which ensures durability of long time use._x005F_x000D_3.Mini size, can fit for RESOUND hearing aids._x005F_x000D_4.Easy to install, make sure the older or other groups at ease._x005F_x000D_5.16 Pcs / set, can meet your basic demand._x005F_x000D__x005F_x000D_Specification:_x005F_x000D_Item Type: Hearing Aid Accessories_x005F_x000D_Material: Plastic_x005F_x000D_Color: As Pictures Shown_x005F_x000D_Item Size: Approx. 6.5 x 4.3 cm / 2.6 x 1.7 inch_x005F_x000D_Item Diameter: Approx. 4.3 cm / 1.7 inch_x005F_x000D_Item Weight: Approx. 9 g / 0.3 oz_x005F_x000D_Function: Earwax Guard_x005F_x000D__x005F_x000D_How to use:_x005F_x000D_1.Use screenchanger to take out old filter._x005F_x000D_2.Clean the edge of the horn on the hearing aid._x005F_x000D_3.Use the other end to stick a new filter._x005F_x000D_4.Install a new filter and make sure it firm._x005F_x000D__x005F_x000D_Package Include:_x005F_x000D_1* Set of Earwax Filter (8 Pcs Red Filter, 8 Pcs Blue Filter)_x005F_x000D__x005F_x000D_Note:_x005F_x000D_1.Please confirm the filter installed firmly, preventing it from being trapped in auditory meatus._x005F_x000D_2.Replace the earwax filter according to the circumstances after using every six months or one year._x005F_x000D_3.Use brush to clean the earwax filter frequently. 1Waterproof and oil-resistant filter, can prolong the life of your hearing device by preventing earwax or water from being trapped inside 2Made of quality material, which ensures durability of long time use 3Mini size, can fit for RESOUND hearing aids 4Easy to install, make sure the older or other groups at ease 516 Pcs / set, can meet your basic demand