Sound box type: portable bluetooth speakersAdjust way: buttonsFunction characteristics: bluetooth audio input， bluetooth hands-free calls， the LINE， IN TF cardProduct featuresProduct features1.quality: top grade， durable.2. Bluetooth wireless transmission， support for hands-free calls3. Support the TF card automatic playback function4. Suppor computers， mobile phones， MP3 players and other audio interface5. Small capacity greatly， large volume， high vigorous powerful6.Battery capacity:400 MA7.extentive memory:16g8.effective distance:8 meters，support blutooth:30meters9.appearance size: 61*61*62mmIncluded1x Bluetooth portable speaker.1x USB power cable.http://contestimg.wish.com/api/image/rating?name=7d7d7a927ae011e6a922065f903a9ac5.jpg&w=1000&h=1000&m=0&t=0