Discription: mini-rechargeable bomb speakerFrequancy response: 120Hz-20KHzCord plug: 3.5mmBuild-in Lithium Battery: YesSupport: MP3/4， mobile phones， tablet PCs， etc.Dimensions: 45mmMaterial: ABSSpeaker: 32mm speaker 6OhmsOutput: 2.0wLi-ion input: DC5VPower supply: DC