93dB 360° Sound | Dual 20W Drivers | All-Around Clarity
S1 CIRCLE
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.
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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
2-Year Warranty
Free Global Shipping
24/7 Customer Support
Secure Payment
About the S1 CIRCLE
Acoustic Precision In A Perfect Sphere.Engineered For Sound Lovers.
Impactful Bass Effect
Impactful Bass Effect
Designed for rich, immersive sound.
Portable & Durable
Portable & Durable
360° bass, dual passive radiators deliver deep and powerful sound
Weatherproof
Weatherproof
IPX5-rated for splash resistance- perfect for outdoor use.
Built-in Microphone Function
Built-in Microphone Function
Built-in microphone, hands-free calls made easy
Key Features
Engineered For Expectional Performance To What Is Essential
Patented Spherical Design
Designed for maximum clarity and minimal distortion
IPX5 Water Resistance
IPX5 rating ensures your music goes wherever you do
Type-C
Using Type-C, charging and connecting USB flash drives
Customizable Settings
Control bass, treble, and more via the UB+ App
Technical Specification
Audio Specs
- Loudspeaker: (2.5" Bass X2 + 1" Tweeter X2 )
- Passive Radiator X2
- Output: 20W + 20W
- SPL (Sound Pressure Level): 93dB
- Frequency Range: 45Hz-17kHz
Battery
- Battery Charging Time: 5-8 hours
- Playback Time: 16 hours
- Battery Capacity: 2500mAh x 3
- Battery Charging Voltage: 5-12V/2A
Controls and Connectivity
- TWS (True Wireless Stereo): Yes. Connect 2 (L/R) speakers for balanced stereo sound.
- Low Latency: 75ms
- Input Bluetooth: Bluetooth 5.3
- Waterproofing: IPX5
- Supported Sound Formats: MP3/WMA/WAV/FLAC/APE/AAC
- Input Jack: 3.5mm/USB Type-C
Speaker Enclosure
- Enclosure Diameter: 138mm
- Weight: 1kg
- Loudspeaker: (2.5" Bass X2 + 1" Tweeter X2 )
- Passive Radiator X2
- Output: 20W + 20W
- SPL (Sound Pressure Level): 93dB
- Frequency Range: 45Hz-17kHz
- Battery Charging Time: 5-8 hours
- Playback Time: 16 hours
- Battery Capacity: 2500mAh x 3
- Battery Charging Voltage: 5-12V/2A
- TWS (True Wireless Stereo): Yes. Connect 2 (L/R) speakers for balanced stereo sound.
- Low Latency: 75ms
- Input Bluetooth: Bluetooth 5.3
- Waterproofing: IPX5
- Supported Sound Formats: MP3/WMA/WAV/FLAC/APE/AAC
- Input Jack: 3.5mm/USB Type-C
- Enclosure Diameter: 138mm
- Weight: 1kg
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Can't decide? Compare
1" Tweeter X2
2.5" Bass X2
1.5" Tweeter X1
3" Bass X1
1.5" Tweeter X1
4.5" Bass X1
3.9"X3.35" Passive Radiator X2
3.4" Passive Radiator X2
5.2" Passive Radiator X2
20W+20W
25W+15W
40W+20W
92dB
93dB
93dB
45Hz-17kHz
45Hz-20kHz
40Hz-20KHz
20h
20h
20h
Yes
Yes
Yes
IPX5
IPX5
IPX5
1kg
0.65kg
2.8kg
Have a question ? We are here to help.
Do you ship overseas?
Yes, we ship worldwide! Shipping is free for all orders over $80 USD. For orders below that amount, standard shipping rates will apply at checkout.
How long will it take to get my orders?
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
Any question?
You can contact us through our contact page! We will be happy to assist you.
What should I do if the firmware update stops?
1.There are two common situations:
A.If you switched to another app (iOS users):
Exit UB+ SEEK (swipe up to close it).
Reopen the app — the update will resume automatically.
B.If the update stops without switching apps:
Press and hold the power button for 15 seconds (master reset).
Exit and reopen UB+ SEEK.
Follow the prompt to restart the firmware update.
2.Important:
During firmware updates, please stay inside the UB+ SEEK app. iOS restrictions prevent background updates and may interrupt the process
How do I perform a Master Reset on my speaker?
To perform a Master Reset:
Press and hold the power button for 15 seconds until the speaker restarts.