【Plug and Play, Easy to Use】Customers who use the line-in speaker do not need to download any apps, do not have to wait, plug in the phone to use. | 【Compact and Neat, No Wires】The size is 1.8*1.8*1.3 inch, you can enjoy music with loud volume anywhere. Super portable and convenient! Nice gift for kids, friends and family. Perfect as new year gift, birthday gift for beloved one! Also good for the elder, the hard of hearing. | 【High Sound Quality】This mobile phone speaker with a 3w speaker in 4ohm and SNR>80db to keep the high sound quality with clear bass, can maximize the volume up to 4 times. | 【Power Saving and Durable】 Built-in 350mAh lithium battery, does not consume mobile phone power when playing, and lasts for long time. Once battery drained out, only 45 mins needed to get a full charge through the micro USB port. | 【Perfect Compatibility】 Compatible 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.