Power is expressed in watts and describes the actual intensity that can be heard from the speaker. Your number indicates the maximum power that the speaker can handle for an extended period of time.

The Ohm resistance describes the amount of electrical resistance that an amplifier reads, that is, the amount of current that can "pass" through the speaker.

The sensitivity of a speaker describes how effectively power (watt) is converted into sound pressure level (dB). Therefore, the higher the value, the louder the speakers will play with a given power.

2

This is a 2-way speaker where frequencies are shared between the tweeter and woofer. That is, the sound frequencies are reproduced by two speakers, a tweeter for the highs and a woofer for the lows.