Rock any outdoor setting with beautiful sound and a boulder look! Our innovative speaker set has the look of real rocks that blend in with the natural landscape, and lets you play and enjoy all of your favorite music in any outdoor setting. Great for back yard entertainment, spa, pool or decks. Our outdoor speaker system has a rugged, weather-resistant design and can be used for nearly any occasion that takes place outdoors. Use our professional quality speaker set for outdoor Sunday worship services in the park, open air concert venues, or for your next house party. Each speaker is powered by Bluetooth technology so you can stream music from your phone to listen to your playlists whenever and wherever you want. Our speakers can use any Bluetooth audio streaming device and require a standard US 110V grounded wall plug for charging. Our speaker set is loaded with extra features, including 120 watts of wireless rechargeable battery power, the ability to link up to 99 additional speakers, weatherproof materials, deluxe 4-inch polypropylene angled woofers with butyl rubber surrounds for optimal sound, 60 watts total system power per speaker, and frequency response of 40Hz-20 kHz with 88dB sensitivity at 8ohm. Each speaker measures 8.86 × 9.45 × 7.87 inches. Since 1991, Goldwood has manufactured professional grade audio and electronic products that are known throughout the industry for their superior sound and reliability. We are passionate about delivering the top quality products you deserve at unbeatable values and affordable prices.