The Play 1 Sounds bigger than it looks. Wonder where all that sound is coming from? The technical answer—from a pair of Class–D amplifiers and custom–built drivers, all meticulously tuned to the speaker’s unique acoustic architecture. Humidity resistant. We built PLAY: 1 humidity resistant so you can enjoy your favorite songs in music–starved places like bathrooms and outdoor patios. All you need is Wi-Fi access and a place to plug it in. Just remember, it’s not waterproof or weather resistant. Power & Networking Power supply: Auto–switching 100–240 V, 50–60 Hz AC universal input. Wi-Fi, not Bluetooth: Connects to your home Wi-Fi network with any 802. 11b/g, 2. 4 GHz broadcast–capable router for uninterrupted wireless streaming. Ethernet port: One 10/100 Mbps Ethernet port. Wire directly to your router to operate your Sonos if Wi-Fi is unstable, or use the Ethernet port to provide Internet accessibility to non–wireless devices if you’re using BOOST setup.