Compatibility:These case ear tips kit only compatible with Denon PerL Pro True Wireless Earbuds, Not for other models. High Quality Material: this case cover made of soft durable elastic silicone material, complete protection against scratches, bumps, anti-shock and anti-slip, the surface is treated with special oil spray for anti-fingerprint and dustproof Durable Carabiner:Each silicone case is equipped with a metal carabiner clip, you can easily hang it on a backpack, keychain, belt of trousers, etc., in case of missing it and is being very convenient to use. Easy Installation:Come with highly sticky doulble-sided adhesive design avoid losing your earbuds when you out the door,support charging with cable no need to remove the case cover to charge your buds. Warm Tips: Package include 1 x Silicone Case, 1 x Keychain/Carabiner,1 x Cleaning pen,1 x Lanyard(NOT INCLUDE EARBUDS). We take care of all quality-related issues with a REPLACEMENT, so if you have any problem, please contact us without hesitation. Designed specifically for Denon PerL Pro True Wireless Earbuds.