Features Non Paper Diaphragm Material --- Full range cavity small speaker shape is rectangular, diaphragm material is non paper, the magnetic circuit form of internal magnetism. Sealed Tightly --- Full frequency cavity small speaker is stable performance, sealed tightly, convenient and reliable, clear sound. Rated Value --- The full range cavity small speaker has a rated power of 1W, rated impedance of 8Ω, and an effective frequency range of 500‑10kHz. Made of ABS Material --- The full range cavity micro speaker is made of ABS material with excellent craftsmanship. Wide Application --- This cavity small speaker is suitable for robot, advertising machine, game machine, all in one special speaker, smart home. Specification: Item Type: Cavity Speaker Material: ABS Output Sound Pressure Levels: 94±3dB Impedance: 8Ω Rated Input Power: 1W Single Abnormal Sound Test: Frequency Range 300Hz-3.4KHz, Input 1.2V Minimum Resonant Frequency: 800±10%Hz Effective Frequency Width: 500-10kHz Storage Temperature: -20℃-75℃ Operating Temperature: -30℃-85℃ Vibration: 10-55Hz Amplitude: 1.5mm Package List:4 x Micro Speaker Package List 4 x Micro Speaker