United Entertainment zip ears The Zipper Earphones are extremely handy as these earphones can be zipped shut after use so that they do not become tangled. The Zipper Earphones fit on any smartphone, iPod or tablet with a 3.5mm output. The Zipper Earphones have a great sound quality and come with 3 different sizes of earplugs. Specifications: Material: metal Colour: red Weight: 32 grams Age: from 9 years Gender: unisex Zipper length: 60-80 cm Plug: 3.5mm output Frequency range: 20Hz - 20kHz