Winfu A60 Sub-Woofer

RMS power (continuous power handling) is not listed.

Peak power rating is not listed.

Frequency response (how low it can go) — unknown.

Impedance, sensitivity, enclosure type, maximum excursion, and distortion levels are not available.

Whether there is any crossover built in or if it’s purely passive (though "under‑seat type" often implies it's active or needs an amplifier).