Product Name: 15mm Circular Plastic Micro Speaker for Aircraft Toys Sound Model NO.: SM15JX8-0.5B Brand: Jy Certification: ISO9001, CE, RoHS WORD nChannels: 2.1Channel Usage: Expand Volume, Monitor, High Fidelity Radiation Mode: Indirect Radiation Type Style: Head-mounted Transducer Principle: Dynamic Earphone Cone: Polypropylene and Titanium Edge Transmission Mode: Air-conduction Category: Speaker Dimension: 18mm*3.5mm Sound Pressure Level: 89 dB at (Avg 0.8,1.0,1.2,1.5)kHz 0.5W/0.05m Voice Coil Imp: 8ohm Rated(Max.)Power: 1.0 W Trademark: JY Transport Package: Paper Specification: 15mm*3.9mm Origin: China HS Code: 85318090 Product Description 1-1Dimensionφ15×3.5t1-2Rated Input Power0.5W1-3Max Input Power1.0W for 1 minute1-4Rated Impedance8±15% Ω /2KHz/1V1-5Coil resistance7.4±10% Ω 1-6Resonance Frequency(f0)1000±20% Hz/1V1-7Sound Pressure Level89±3 dB 0.1W/0.1m At (AVG0.8,1.0,1.2,1.5)KHz baffleboard (IEC)1-8Frequency Rangef0HZ ~ 20KHz1-9Buzz,Rattle,etc.Should not be audible at 2.36V sine wave between(100Hz ~ 5kHz)1-10Weight1.5 g1-11Voice Coil Diameterφ8.5 mm 1-12Magnet (NdFeB)φ8.0×1.0t mm1-13AppearanceShould not exist any obstacle to be harmful to normal operation;damages,cracks,rusts and distortions,etc.1-14Storage temperature-40ºC~+85ºC1-15Operation temperature-20ºC~+85ºC