?Portable & Easy Use ? It's mini size can be carried at anytime and anyplace. Then you enjoy the music simply by operate one button/dial can complete all functions(Turn on/off, Match/Connect,Volume +/- , Reset,etc). Everyone can learn to use it in seconds. ?Battery Powered & Fast Charging?Quick charging via USB Type-C, super long battery life over 5 hours. Let you fully heart enjoy the music flowing from Muzen Sticker. ?Quick Bluetooth Match?5.0 Bluetooth can compatible with most bluetooth devices. same Bluetooth and product name ) is very easy and quick. Easily connect to tablet, computer or any other bluetooth enabled device in seconds. ?Vintage Modern Design?The style of old-fashioned radios, the beeping sound of Morse code, the fashion luminous dial, the fridge stickers called "memory magnets" by collectors. The perfect combination of retro and fashion, these are high-value aesthetic elements to decorate your life. ?Special Sound Quality?Muzen Sticker Speaker produces different sound quality by combining with contact surface. Usually, the metal surface will produce better sound effect, so it is widely sticked on surface of fridge, coffee machines and metal cabinets.