44mm driver with 91dB sound pressure level produces loud audio and thumping bass Equipped with advanced Bluetooth 5.3 technology that provides up to 33 feet (10m) of reliable wireless connectivity with your smartphone Battery powered speaker can be recharged over the USB-C port and offers up to 24 hours of music playback IPX7-rated construction is dust proof, splashproof, and fully waterproof which means it can survive up to 3 feet underwater for 30 minutes Included carabiner clip and nylon loop allow firm and sturdy attachment to your belt or backpack Strong housing and sturdy mesh fabric can withstand rugged usage Enjoy truly wireless stereo audio by pairing with another Kilo speaker