When a speaker this small sounds this good, you'll never leave it behind. The Bose SoundLink Micro Bluetooth speaker delivers unmatched sound for a speaker this size. Its rugged design and durable strap let you take it everywhere you go. It's waterproof from the inside out, so even if it falls in the pool, just pull it out and keep on playing. Up to 6hrs of playback time. IPX7 Waterproof Rating.