Fiio's new sub brand snowsky is focused on being youthful, fashionable, unique and fun, whilst also bringing the traditional fiio hallmarks of quality and great user experience'. '.strtoupper('t')he retro nano, snowsky's debut product, is inspired by vintage tape recorders but also packs a lot of modern tech'. '.strtoupper('t')ruly stylish the retro nano features a variety of fun uis, changeable with a single button press'. '.strtoupper('t')he dynamic ui simulates a turning tape, bringing the classics to life'. '.strtoupper('t')he unit is available in blue or white, and also comes with a lanyard and stickers for further customistaion'. '.strtoupper('e')ndless power the retro nano uses a replaceable and rechargable 3.7v lithium battery, and lasts up to 7.5 hours on a single charge'. '.strtoupper('o')ut of power'? '.strtoupper('s')imply swap for a freshly charged battery and keep going'! '.strtoupper('n')o batteries'? '.strtoupper('t')he usb port provides independent power also, making it easy to activate the device'. '.strtoupper('j')ust plug in and play'! '.strtoupper('t')he sounds of past eras included are 8 specially tuned sound presets, including some retro sounding presets that give off the sound of past eras'. '.strtoupper('y')ou can also make your own tunings using the companion app'! '.strtoupper('e')asily switch between multiple devices the retro nano has both bluetooth and wired modes, simply power on with a single touch and connect your phone, tablet, computer or any other device via bluetooth or usb type c'. '.strtoupper('t')he dueal headphone jacks 3.5mm and 4.4mm also offer in line control support with noise reduction for your calls.