Cambridge Soundworks OontZ Cylinder Portable Bluetooth Speaker — Black, 14W, IPX7 Waterproof, 20H Battery

The Cambridge Soundworks OontZ Cylinder is a compact, 14-watt portable Bluetooth speaker that delivers punchy bass, clear highs, and up to 20 hours of wireless play with IPX7 waterproofing.

Whether you're filling a room, taking music to the pool, or pairing two speakers for wider stereo sound, the OontZ Cylinder blends portability with performance. It uses an improved digital audio processor and dual stereo drivers to give more low-end presence than you'd expect from its size, while Bluetooth 5.4 extends wireless range for flexible placement. Built to survive splashes and brief submersion, it also includes a USB-C charger and a built-in microphone for hands-free calls.

How loud and detailed is the sound for its size?

The OontZ Cylinder produces robust, room-filling audio from dual precision drivers driven by a 14-watt amplifier. The onboard processor emphasizes bass and clarifies mids and highs so vocals and instruments remain distinct even at higher volumes. Distortion control keeps sound clean at maximum output.

• 14 watts total power for strong volume in small-to-medium spaces
• Dual drivers for genuine stereo imaging
• Digital processing to boost bass and reduce distortion

What wireless features and battery life can I expect?

Equipped with Bluetooth 5.4 and an advanced antenna layout, the speaker maintains a reliable wireless link up to 100 feet in open environments. You can stream for as long as a full day on a single charge—up to about 20 hours depending on volume and content. A USB-C port speeds recharging compared with older micro-USB designs.

• Bluetooth 5.4 for fast pairing and extended range
• Up to 100 feet unobstructed wireless range
• Approximately 20 hours of playback on a single charge, USB-C recharge

Is it durable enough for outdoor and water use?

The speaker carries an IPX7 waterproof rating, so it resists splashes, rain, and temporary submersion up to one meter for 30 minutes. Its lightweight construction makes it easy to pack for beach days, hiking, or poolside listening. The finish and controls are designed to remain functional after exposure to wet conditions.

• IPX7-rated — safe for brief submersion and heavy splashes
• Lightweight, portable cylinder shape for easy carrying
• Sealed construction to protect internal electronics around water

Can I expand stereo performance or make hands-free calls?

You can wirelessly link two OontZ Cylinder speakers together for separate left and right channels, creating wider stereo separation and a more immersive soundstage. A built-in microphone handles hands-free calls, letting you answer without interrupting your playlist. Speakers pair easily and remain separate units for placement flexibility.

• Pair two speakers for true left/right stereo playback
• Built-in mic supports speakerphone calls
• Speakers sold separately for expanded setups

Who is this for: The Cambridge Soundworks OontZ Cylinder is ideal for listeners who want impactful sound in a travel-friendly package—people who host small gatherings, enjoy outdoor activities, or need a reliable shower and pool speaker. It's suited to users seeking more bass and volume than tiny cube speakers provide, without sacrificing portability or waterproofing.