Product highlightsBluetooth 5.4 range: up to 30 feet IP67-rated waterproof and dust-proof soft-touch silicone exterior Bose app: free download from Apple App store and Google Play volume control adjustable EQ pair two SoundLink Max speakers in Stereo Mode or Party Mode group SoundLink Max speakers with compatible Bose smart speakers for music around your home General features: easy-to-use control buttons removable handle USB-C charging port for your phone built-in rechargeable battery lasts up to 20 hours included USB-C charging cable and wall outlet adapter 10-7/16"W x 4-3/4"H x 4-1/8"D weight: 4.9 lbs. warranty: 1 year What's in the boxBluetooth portable speaker USB-C/AC power adapter 58" USB-C cable "We're here to help" booklet About this itemWritten by Crutchfield's Ralph GravesDeep bass and epic stereo sound anywhere The Bose SoundLink Max speaker was made for your outdoor adventures. It delivers big spacious stereo sound with plenty of deep, solid bass. And it's completely waterproof and dust-proof — equally at home on the beach or on the ski slopes. This rugged Bluetooth speaker gives you up to 20 hours of continuous operation from its built-in rechargeable battery. And you can even use some of that juice to keep your smartphone or other portable devices charged. Bose app The free Bose app gives you greater control over your SoundLink Max and access to more settings. Adjustable EQ lets you customize the bass, midrange, and treble levels to suit your personal taste. The app lets you wirelessly pair two SoundLink Max speakers. Set them to Stereo Mode to separate the sound into left and right channels for even bigger stereo sound or use Party Mode for double the volume. You can even pair the SoundLink Max with select Bose smart speakers to play music throughout your home.