Polk Audio Atrium 8 SDI Indoor Outdoor Speaker (Each) Color:Black No worries—you can fast charge

No worries—you can fast charge another 4 hours of battery life in just 15 minutes

Battery life: up to 18 hours with a full charge using the included batteries

Standard Finishes: Satin Walnut/Silver

Enclosure: The P-XW1221S is constructed of 5/8" thick MDF (Medium Density Fiberboard) with a 3/4" thick baffle

The rugged enclosure is built from 5/8" MDF with a 3/4" thick internal baffle to give the sub solid support

Polk Audio Atrium 8 SDI Indoor Outdoor Speaker (Each) Color:Black No worries—you can fast chargePolk Audio Atrium SDI 8 Indoor Outdoor Speaker (Each) Enjoy enhanced quality sound outdoors with the black Polk Audio Atrium8 DSI All Weather Outdoor Speaker. It features a single dual input switch, which allows you to use it either as a virtual stereo speaker or as part of a traditional L R stereo pair when used with a second speaker. It can output up to 125W of continuous audio and is designed to withstand UV rays, salt fog, extreme temperatures,