Harman Kardon FIT 3F is a 3.5-inch (89 mm) 2-way coaxial car speaker designed mainly for OEM dashboard and center-channel upgrades. [1, 2]

Key Specifications
Design: 2-way coaxial car speaker (grilleless) [1]
Size: 3.5 inches (89 mm) [1]
Power Handling: 30W RMS continuous power / 240W peak power [1]
Frequency Response: 80 Hz – 40 kHz [1]
Sensitivity: 90 dB (@2.83V) [1]
Impedance: 4 ohms (nominal) [1]
Tweeter: Edge-driven textile dome tweeter supporting Hi-Res Audio up to 40 kHz, featuring a Uni-Pivot rotatable design (up to 270 degrees) and adjustable output level (0dB / -3dB). [1]
Woofer: Plus One glass fiber cone with post-consumer recycled (PCR) materials. [1, 2]