Features MULTIPLE USE: This mini speaker can be widely used in facial recognition, facial payment, all-in-one machines, advertising machines, laptops, video phones, portable DVDs, LCD screens and more. RELIABLE MATERIAL: This micro speaker provides you with clear sound, which is made of ABS plastic, sturdy and firm, not easy to break. STABLE PERFORMANCE The high-end magnetic speaker has stable performance, waterproof sealing, convenient and reliable, providing you with long-term service. PARAMETERS REFERENCE: Rated Power: 2W, Nominal Impedance: 8Ω, Frequency Response: 0-20K Hz, Maximum Distortion is 10% SIMPLE CONNECTION:This mobile speaker mic comes with a JST PH2.5mm 2 pin terminal, easy to connect and install. Specification: Item type: Mini speaker Material: ABS Model: W1008. Rated power: 2W Impedance: 8Ω Resonance frequency: 450±20% Output sound pressure: 88±3dB Frequency response: 0-20 kHz Maximum Distortion: 10% Storage temperature: -20°C to 55°C Operating temperature: -20°C to 55°C Package list: 4 x Mini Speakers Package List Item Type: Mini Speaker Material: ABS Model: W1008 Rated Power: 2W Impedance: 8Ω Resonant Frequency: 450±20% Output Sound Pressure: 88±3dB Frequency Response: 0-20kHz Maximum Distortion: 10% Storage Temperature: -20℃ to 55℃ Working Temperature: -20℃ to 55℃