Sound Quality:This mobile phone speaker can amplify your device volume up to 4 times and lets you enjoy the lossless loud voice. With a 3w speaker in 4ohm and SNR>90db to keep the sound with clear bass.Handheld Portable Design:The mini wireless speaker size just 46*46*34mm, compact and lightweight design, easy to pack in your pocket, briefcase, and handbag and carry to anywhere for using it anytime.Enjoy your music, game or movie anywhere you go.Power Saving and Durable:Built-in 350mAh lithium battery, 3-4H Battery Life, no need to 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.Plug and Play: The mini portable speaker just only plug it into your device directly and turn on the power, then you will enjoy loud voice immediately, very simple and convenient to use.Perfect Compatibility: Compatible with any media device with a 3.5mm jack such as mobile phone, tablet, MP3, CD player, laptop