High-Quality Sound: Experience superior audio with the mini Speaker. Designed for audiophiles, this 1.25-inch, 31mm speaker offers a full range of high-fidelity sound. Construction: Featuring a robust High-quality materials , these speakers are built to last and deliver consistent, high-quality performance. Perfect for DIY Projects: Ideal for custom audio projects, these speakers are compatible with systems and other DIY audio setups, making them a versatile choice for any audio enthusiast. Compact and Powerful: Despite their small size, these 4ohm, 3W speakers pack a punch, providing clear and loud sound in a compact package. Rated power: 3W Maximum power: 4W Minimum resonance (FO): 260Hz 20% Frequency response range: 260Hz-17KHz Sensitivity: 78DB Horn diameter: 31MM Voice coil diameter: 20 4MM Magnet: neodymium iron boron single magnet Installation hole diagonal: none Speaker total height: 12MM Installation depth: 12mm Speaker opening: 29mm (recommended) Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:Black Material:plastic Package Contents: 2 x Full Range Speaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.