Niconico Nekomura Cat Earphone Jack Plug Accessory Ver. 2 (Kuro) Niconico Nekomura Cat was created from a Tweet of Japanese Twitter which went Viral Worldwide. Official licensed product- Shipped from Japan Compatible with any 3.5mm earphone jack socket in a Smartphone. A Perfect Charm Cum Earphone Jack Accessory for your Smart Phone 90 days special warranty from Hamee