High Sound Quality: This product features 3W 4ohm speaker and 90db SNR to keep high sound quality with clear bass, 4 times the boost volume allows you to enjoy music and audio at the same time. Mini compact design: the wireless mini speaker only 46*46*33mm, as small as half a card credit, it's easy to carry wherever you go. Plug and Play: Built-in button design and 3.5mm auxiliary jack make it easy to play music whenever you go through the smartphone, ipad and computer. Never worry about Bluetooth disconnected. Power saving and durable: Built-in 350mAh lithium battery, won't consume mobile phone power when playing and lasts for a long time. Once the battery was depleted, it only took 45 minutes to get a full charge via the micro USB port. Perfect compatibility: it works with any multimedia device with a 3.5mm jack such as mobile phone, tablet, MP3 player, CD player, laptop, just turn on and plug in directly to play music or audio video.