The ultra ruged BRV-X rocks the outdoors with an IPX7 water resistant rating and shockproof rubber exterior. Experience BRAVEN's Highly acclaimed TrueWireless pairing for left and right stereo sound using two BRAVEN BRV-X speakers. Included straps allows to strap the BRV-X securely to a bike, boat or tree for a perfect outdoor listening setup. Switch between indoor and outdoor EQ modes to optimize your listening experience to your surroundings. The built in 5200mAh portable power bank quickly charges smartphones, mp3 players and other USB devices. The built-in noise cancelling microphone allows for easy hands-free calls. Connect a Bluetooth® device to the BRV-X to wirelessly play audio. BRV-X features assisted pairing through NFC.