iSymphony WS2 Wireless Speaker Pair for Use with iSymphony W2 Wireless Micro Speaker System (Black) Wireless speaker pair for use with the W2 Micro Music System 120 Watts Peak Power/30 Watts Output Power Plug and Play ease-of-use; control your W2 system from the speaker Full bass response and quality tweeters Expandable--add as many speaker pairs as you like