Sony SRS-XE200 X-Series Waterproof Ultra Portable-Bluetooth-Speaker, Black version.

Features:
- Lightweight design with an easy to carry strap for maximum portability
- IP67 waterproof and dustproof paired with a shockproof design
- Line shaped diffuser distributes music evenly across a wide sound stage
- X-Balanced speakers for powerful bass and crisp sound
- Dual passive radiators reproduce powerful bass notes.
- Up to 16 hours of playing time, plus quick charging
- Personalized sound control via the Sony | Music Center app