S1 원

Engineered with 6 precisely placed drivers, the S1 Circle surrounds you with immersive sound in every direction. With 93dB output and rich bass down to 45Hz, it delivers balanced power from any corner of the room.

What Makes the S1 Circle the Best-Sounding Bluetooth Speaker

Most Bluetooth speakers fire sound in one direction. Point them at a wall, and half the room gets nothing. The S1 Circle is built differently. Six drivers, dual 2.5-inch woofers, dual 1-inch tweeters, and dual passive radiators are arranged inside a spherical enclosure to push audio outward in every direction equally. That's what makes it a real 360 Bluetooth speaker, not just a marketing label. Wherever you are in the room, you hear the same balanced mix, making it one of the best-sounding Bluetooth speaker options for immersive, room-filling audio.

Six Drivers, One Cohesive Sound

The driver count matters more than it sounds. Most speakers at this size use a single woofer-tweeter pair. The S1 Circle doubles up on both, two woofers working in tandem for fuller bass, two tweeters covering the high-frequency spread, and two passive radiators tuned to the enclosure to reinforce low-end without drawing extra power.

Output is 40W total (20W per channel), frequency response runs from 45Hz to 17kHz, and max SPL hits 93dB. The dual passive radiators are large, 3.9" × 3.35", and their output is visible when the bass has enough content, which is a nice physical indicator that the low-end is actually moving air. The combination of six drivers, balanced tuning, and true 360° sound makes the S1 Circle the best Bluetooth speaker choice for home listening, outdoor gatherings, and everyday use.

Built-In Microphone for Calls

One feature the S1 Circle has that the dB1 and dBMini don't: a built-in microphone. It handles hands-free calls without needing to pick up your phone, which makes it more practical as a desk or kitchen speaker than a pure music-only unit.

Portable and Weatherproof

The S1 Circle weighs 1kg, heavier than the dBMini but significantly lighter than the dB1. The cowhide leather strap handles one-handed carrying, and IPX5 water resistance covers outdoor use, poolside setups, and light rain without needing a case or cover.

The battery lasts up to 16 hours on a single charge. That's slightly less than the DB1 and DBMini (both rated at 20 hours), but the 3 × 2500mAh cell pack holds up through a full day of use. Charging via USB-C delivers 5-8 hours of standard use, and Bluetooth 5.3 keeps the connection stable up to 10m.

TWS Stereo and App Control

Pair two S1 Circle units in TWS mode, and you get dedicated left/right channels; the 360° coverage from each speaker combines into a genuinely wide stereo image. Latency holds at 75ms across both, covering video use without sync issues.

The UB+ SEEK app (iOS and Android) handles EQ customization, bass and treble adjustments beyond the onboard controls. Six colors available: Mars Rustic Orange, Neptune Midnight, Sunburst Yellow, Pluto Obsidian, Blue Terra, and Mercury Silver. The widest color range of any speaker in the UB+ lineup.

What's in the Box

Single Speaker: S1 Circle, USB-C cable, cowhide leather strap, quick start guide.
With Stand: Everything above, plus the anodized aluminum tripod stand and base plate.

Logistics Description：
Shipping is free for all orders over $80 USD. For orders below that amount, standard shipping rates will apply at checkout.

Estimated delivery times:
USA: 2–4 working days
Europe: 3–7 working days
Asia: 2–5 working days
Other international regions: 5–12 working days