What’s in the box SoundLink Revolve+ II speaker USB power supply USB cable (micro-B to USB A) AC power adapters (not available in all countries) Dimensions/weight Speaker: 7.25" H x 4.13" W x 4.13" D (2 lbs) Materials Seamless aluminum grille Silicone top with buttons Silicone bottom Convenient and durable woven carry handle Battery Rechargeable lithium-ion battery Battery life: Up to 17 hours on average listening volume Charging time: Up to 4 hours when using the provided cable and USB power