CSS-66668N is a compact speaker designed for audio output in consumer and industrial applications. It features a 90 dB sound pressure level at 1.0 W measured at 0.1 m, with a resonant frequency of 200 Hz and a frequency response extending to 15,000 Hz. The speaker incorporates an Nd-Fe-B magnet, paper and foam cone material, and operates over a temperature range of -20°C to +55°C. With an impedance of 8 O at 0.8 kHz and maximum input power of 4.0 W, this speaker is well-suited for embedded audio systems, alarm devices, and consumer electronics requiring compact, reliable sound output.