Features: By adopting advanced pneumatic technology, it is possible to achieve high ranges supplementation, with a bandwidth of up to 50K, providing a more delicate and clear sound quality experience. Using silver wire as a transmission tool reduces loss, makes sound transmission smoother, and ensuring sound effects. Optimized processing design makes the sound softer and more delicate, bringing smooth auditory experience. Equipped with a highly sensitive driving unit, it can quickly respond to signals, improve dynamic performances, and enhancing the instantaneous response capability of sound. In addition to super high frequencies, speakers also have good performances in the low frequency ranges, bringing a richer and more three-dimensional sound experience. Specifications: Component: ABS+metal Model: AMT139G, AMT139B Size: 15x10x4cm/5.9x3.93x1.57inch Sensitivity: 92dB/W Power: 15W Impedance: 8Ω Usage scenarios: widely used for home theaters, music rooms, professional recording studios and other places Package Includes: 1Pc High-end AMT Ribbon Tweeter Loudspeaker note: Other accessories demoed in the pictures is not included. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.