The Sony ULT Field 5 is a portable wireless Bluetooth speaker designed for outdoor enjoyment and reliable performance. It features an IP67 rating, making it fully waterproof, dustproof, and rustproof, capable of withstanding submersion in up to one meter of water for 30 minutes. The speaker also offers an extended battery life of up to 25 hours, ensuring uninterrupted playback during long trips or gatherings. A 360° party light adds visual ambiance, while the included shoulder strap enhances portability.

The sturdy construction and rubberized exterior provide durability against drops and scratches, suitable for various environments from poolside to hiking trails. Sound quality is driven by Sony’s ULT series technology, delivering enhanced bass response that deepens the listening experience without distortion at moderate volumes. The passive radiator design produces clear mids and highs, maintaining balance across genres like pop, electronic, and hip-hop. The speaker connects via Bluetooth 5.3 for stable pairing and a range of approximately 30 meters, minimizing dropouts in open areas.

It supports multipoint connection to two devices simultaneously, allowing easy switching between music sources. The front-facing controls offer tactile feedback for volume adjustment and playback management. The IP67 waterproof, dustproof, and rustproof construction ensures the speaker operates reliably in dusty, rainy, or humid conditions without internal damage. The rustproof housing resists corrosion, extending the product lifespan when used near saltwater or moist environments.

The battery is rechargeable via USB‑C, and the speaker has a low power consumption standby mode to preserve charge. The textured surface provides a secure grip, and the shoulder strap clips securely to the integrated attachment points, making hands-free carrying convenient. These features make it a practical choice for camping, beach trips, or backyard parties. Compared to similarly priced portable speakers, the ULT Field 5 offers a combination of durable build, long battery, and immersive sound at an exceptionally affordable price point.

The 360° party light can be toggled on or off, offering customizable atmosphere without draining the battery disproportionately. The speaker is also compatible with voice assistants via a connected smartphone. With a weight of about 2.3 pounds, it balances portability and acoustic output, providing appreciable volume for medium-sized gathering spaces. The included shoulder strap and IP67 protection add real value, making this a reliable audio companion for active users.