1.Cute design and touch feeling 2. loud and clear volume 3.switch in mobile/PC/mp3/mp4/laptop,etc 4.Lithium battery Model CR-309Color green, pink, red, blue, blackSupportswitch in mobile/PC/mp3/mp4/laptop,etc power 3WKHz trumpetΦ40mm/4Ω Card reader Supports USB flash diskPower supply USB powered / Lithium Polymer battery Battery capacity 400mAH, 3.7VCharging voltage 5VProduct Dimensions55*80* ...