CestMall F10 Portable Compact Mini Speaker, Four Times of the Normal Volume, 3.5MM Audio Input, for iPhone Android Tablet Nevigation PSP MP3 MP4 Black Mini compact design, compact body to carry anywhere; Unique line-in concept, No apps requires, Just Plug-in sound out. (NOTICE: please press the power key at the bottom in the middle of this mini speaker. & A silicon rim is placed on 3.5mm audio plug, please remove it if necessary.) Transparency appearance; Building in Li-ion battery, supports for playing time up to 8 hours, and single charger of 45 minutes; This product has the function of automatic shutdown, if without any audio input signal in 5 minutes, it will automatically be turned off. Ultra portable size contains super capacity, 2W loud and great clear sound quality, the four times of your mobile phone's normal volume lets you and your friends enjoy music and video at the same time. Greatest compatible: it makes a great companion with any media device with a 3.5mm jack such as mobile phone, tablet, MP3, CD player, laptop, just turn power on and plug it directly to play music or video audio. Retail package includes F10 portable compact mini speaker, charging cable and storage bag.