Specification Amperage : 2 amps Brand : Yuecoom BulletPoint1 : [Function] The horn is all frequency effect, the bass is very strong, the equivalent of traditional loudspeaker 8 inch bass effect. BulletPoint2 : [High Performance] The product has excellent workmanship and can maintain stable performance in harsh environment. Since there is no body standing wave, so all kinds of vocal music original, the sound quality of each sound frequency range is very clear. BulletPoint3 : [Wide Application] Suitable for computer, laptop, MP3, MP4, CD, mobile phone and other equipment sound playback and sound expand. BulletPoint4 : [Professional] Our products are designed and manufactured in line with professional standards, you can buy with confidence. Latest innovation, break through tradition limitations, 360 ° frequency transmission. BulletPoint5 : [Easy to Install] Our products are simple and practical, and installation does not require much effort on your part. Sound penetration is strong, small size and convenient. Color : Black CompatibleDevices : default CompatiblePhoneModels : iPhone Android ConnectivityTechnology : Wireless ConnectorType : HDMI CurrentRating : 30 amps ExternallyAssignedProductIdentifier : 7639287455949 FinishType : Hdmi IncludedComponents : inc InputVoltage : 5 volts ItemName : Yuecoom Resonance Speaker, 1Pcs 50MM 2Inch All Frequency Resonance Speaker Vibration Strong Bass Louderspeaker(4Ω 25W) ItemPackageQuantity : 1 ItemTypeKeyword : portable-mp3-player-line-in-speaker-systems Manufacturer : Yuecoom Material : Material ModelNumber : TY-02219 MountingType : Tabletop Mount NumberOfItems : 1 NumberOfPorts : 1 OutputCurrent : 2 amps OutputVoltage : 5 volts PartNumber : Yuecoom0c1wrpzo9a-01 PowerSourceType : PowerSource ProductDescription : Features:The horn is all frequency effect, the bass is very strong, the equivalent of traditional loudspeaker 8 inch bass effect.Latest innovation, break through tradition limitations, 360 ° frequency transmission.Since there is no body standing wave, so all kinds of vocal music original, the sound quality of each sound frequency range is very clear.Sound penetration is strong, small size and convenient.Suitable for computer, laptop, MP3, MP4, CD, mobile phone and other equipment sound playback and sound expand. Specifications:Color: steelImpedance power(Optional): 4 Ω 25 w; 8 Ω 20 wType: electrodynamic (moving coil)Shape: roundDiaphragm material: non-paperMagnetic circuit form: internal magnetic typeFrequency characteristics: full spectrum band (full range)Rated power: 25WFrequency response: 20HZ -- 20KHZ (kHz)Directivity: positiveSensitivity: 95 (dB/W)Noise ratio: 90 (dB)Harmonic distortion: 5 (TMD %)Size: 50 * 50 * 30 mm/1.97*1.97*1.18inchWeight: 268 g Package Included:1 x Vibration Speaker