Features: Get the perfect for your recording pen with this special windproof sponge. Made from good quality sponge material, it provides excellent windproof and dustproof features for uninterrupt recording. Suitable for musicians, journalists, podcasters, and recording enthusiasts who want reliable and professional result. Whether you're conducting interviews or capturing outdoor sounds, this sponge minimizes wind noise for clear and precise recordings. for ZOOM H2N H4N recording pen sponge, with windproof, dustproof, antidrop, and wind proof equipment. Specifications: Material：Spinge Signal-to-noise ratio: about 70dB Power 200W Radio Head Dynamic For ZOOM H2N H4N Recording Pen User Package Includes: 1PC Windproof Sponge note: Due to the problemsof lighting effects and shootingangle, there is certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.