Features: Featuring two magnetic circuit system with 40% enhanceds field strength and 14mm voice coils, this 33mm rubber edges speaker delivers ≤1.2% across 2kHz 10kHz ranges for clear high frequencies. The aluminum concave diaphragm with rubber suspension edges combats distortions through optimized rigidity and damping, achieving 86dB±3dB at 1W/1m while maintaining 33x14mm. Perfect for sound enthusiasts and professional manufacturers creating space efficient speakers, car sound systems, or embeddeds home devices. for integration into portable speakers, gaming headsets, or IoTs devices requiring performances across extreme temperatures ( 20°C to 70°C). Engineered with 4Ω impedances and 3W power handling, this speaker driver seamlessly pair with Class D amplifiers for energy efficient sound. Specifications: Sensitivity: 78±2dB/W rateds power: 3W Product size: 33mm Type: Multimedia speaker Model: 36mm4Ω2W power: 5w Total harmonics distortions: 5% Weight: 20g rateds impedance: 4 Operating temperatures ranges: -18-60±2℃ Frequency ranges: 260-10KHZ Package Includes: 1PC Rubber edges Speaker note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.