The SoundLink Micro Bluetooth® speaker has a rechargeable lithium-ion battery that lets you enjoy up to 6 hours of music with deep, rich sound. Made from durable materials, this portable speaker can absorb a fall and withstand being tossed around. Its rubberized silicone exterior resists drops, dents, cracks, and scratches. Plus, it’s waterproof and dustproof with an IP67 rating.