1,BASS EFFECT: The resonance speaker has a strong bass effect, equivalent to an 8 inch traditional speaker, which is efficient and practical. 2,FULL FREQUENCY: The resonance speaker has a full spectrum frequency range, and the sound quality in each frequency range is very clear. 3,INTERNAL MAGNETIC: The vibrating speaker is internal magnetic circuit design, single direction, which has high sensitivity and good stability. 4,SPECIFICATIONS: The resonance speaker is circular shape with standard 35MM specification, the compact structure for easy connection. 5,WIDE APPLICATION: Widely used for sound playback and amplification on computers, MP3, MP4, CDs, mobile phones, and other devices. Item Type: Resonance Speaker Magnetic Circuit Form: Internal Magnetic Type Sensitivity: 85dB or W Rated Power: 5W Signal to Noise Ratio: 85dB Harmonic Distortion: 5 (TMD percent ) Diaphragm Material: Non Paper Frequency Feature: Full Frequency (Full Range) Directionality: Single Direction 1 x Resonance Speaker Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.