Two 2" drivers and a 125mm x 45mm passive radiator deliver powerful, room-filling sound Bluetooth technology provides a 100-foot wireless range so you aren't tethered to your device Five LED light modes strobe, beat, and pulse to the music for visual appeal IP67 waterproof rating means this speaker stands up against water, snow, and shock; it also floats so you won't lose it in the water 30-hour battery life ensures you can keep the party going all night long Qi wireless charging allows you to power up your Qi-enabled smartphone by placing it on the speaker; a USB-A port accommodates Lightning and micro-USB cables USB-C quick charge lets you recharge the speaker and your smartphone in a snap Multi-link allows you to connect up to 50 Altec Lansing speakers together for even richer sound Built-in carabiner clip makes it easy to attach the speaker to your backpack, bike, or handbag