Features: Employing -gold-plated diaphragm technology, it transcends the limitations of conventional diaphragm—delivering broader high-frequency extension and dramatically. Low frequencies exhibits deeply extension and ample elasticity, rendering drum beating, bass lines and other low-end with distinct layering.The 10mm large-diameter dynamic driver paired with a double-chamber design forms an acoustics‘golden combination’. Operating at low impedance (32ohms), the 10mm dynamic driver balances power delivery with resolution, effortlessly driven by front-end devices like smartphones and tablets. Say goodbye to the frustration of underpowered sound. Its 32ohm impedance makes this loudspeaker utterly undemanding of its source: smartphones, tablets, new players and other compact sources can drive it to produce rich, full-bodied sound without requiring an external amplifier. Gold plating combined with precise engineering ensures optimal alignment between the diaphragm and magnetic circuit, delivering more accurate vibrations response and far superior sound stability compared to ordinary driver. Specifications: Product name: double cavity HiFi dynamic loudspeaker Dimensions: 10mm Diaphragm Component: gilted Frequency ranges: 20Hz~20KHz Impedance: 32Ω±10% Power: 2~3mW Resonance frequency: 400Hz±20% Sensitivity: 105±1.50dB Package Includes: 2pcs Dynamic loudspeaker note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.