Product Specification:Output:3W Charging Voltage:DC 5V Frequency:90Hz-20KHz Signal-to-noise Ratio:－60dB Degree of Distortion:1% Resistance:4Ω Speaker:66mmSeparating Degree:－70dBMaterials:ABS with Crack Process TechnologyColor:Blue、Pink、GreenFeatures:66mm Hi-fi Speaker、Shocking Bass、with Dynamic Colorful Lights、Bring You Perfect Audio-visual ExperienceLovely Firefly AppearanceHi-tech Anti-jamming TechnologyBuilt-in MP3 Digital Audio Decoder Chip、Bring you Mellow and Pure Sound QualityUser Friendly Design In-line Volume Adjustment、Easy to Control