Dell Pro Plus Wireless Speakerphone - SL525

Technical Specification

Product: Dell Pro Plus Wireless Speakerphone - SL525

Connectivity Technology: Wired/Wireless

Wireless Technology: Bluetooth

Bluetooth Standard: Bluetooth 5.3

Bluetooth Range: Up to 30 m

Cable Length: 750 mm

Plug & Play Support: Yes

Artificial Intelligence Noise Cancelling (AINC): Yes

AI-powered: Yes

Ingress Protection (IP) Rating: IP64

Maximum Number of Paired Devices Supported: 8

Maximum Number of Simultaneous Connections: 2

Features

• Digital signal processing
• Full duplex audio
• Echo cancelation

Number of Microphones: 4

Polar Pattern: Omni-directional

Microphone Technology: Digital Micro-electromechanical Systems (MEMS)

Microphone Frequency Response: 100Hz - 14kHz

Microphone Pickup Range: 2.50 m

Speaker Peak Audio Output: 86 dB

Speaker RMS Output Power: 8 W

Speaker Size/Type: 60 mm/Dynamic

Speaker Output Mode: Mono

Speaker Frequency Response

• 100Hz - 14kHz (Talk Mode)
• 90Hz - 20kHz (Music Mode)

Host Interface: USB-C

Status Indicators

• Battery Level
• Volume Down
• Volume Up
• Bluetooth
• Mute
• On Call
• Powered On
• Teams Active/Notifications

Controls

• Microsoft Teams
• Volume Up
• Volume Down
• Answer Call
• End Call
• Microphone Mute/Unmute

Battery Rechargeable: Yes

Battery Capacity: 3200mAh

Maximum Battery Recharge Time: 2.50 Hour

Battery Talk Time Details

• 12 Hour (talk mode)
• 9 Hour (music mode)

Minimum Charging Power: 2.50 W

Maximum Charging Power: 15 W

Charger Included: No

Operating System Supported

• Windows 11 (64-bit)
• Windows 10 (64-bit)
• Mac OS
• ChromeOS
• Linux
• Ubuntu 24.04

Software Supported

• Dell Device Management Console
• Dell Audio App
• Dell Display and Peripheral Manager

Certifications

• Microsoft Teams
• Zoom

TAA Compliant: No

Package Contents

• Pro Plus Wireless Speakerphone
• USB-C Wireless Audio Receiver
• Travel pouch
• Quick Start Guide & Documents
• USB-A Adapter

Warranty: 3-year Advanced Exchange Service

Dimensions & Weight

1. Depth: 39 mm
2. Diameter: 125 mm

• Weight (Approximate): 355 g

Product Features

1. Answer/End call
2. Volume down
3. Mute/Unmute mic
4. Volume up
5. USB-C cord
6. USB-C wireless audio receiver
7. Microsoft Teams
8. Power button
9. Bluetooth button

Features and Design

Our wireless speakerphone combines portability, versatile connectivity, and AI-based dual-directional noise-canceling microphones to deliver clear, distraction-free audio in any setting - whether at home, in a shared workspace, or on the go.

Intelligent Audio

Perfectly capturing voices with precision, the speakerphone delivers consistent, crystal-clear sound quality up to 2.5 meters between you and the device. Ideal for use in huddle spaces, home offices, or small conference rooms.

Discover the Difference with AI-based Noise Cancellation

Our AI-based noise cancellation microphone technology delivers remarkable clarity by filtering out background noise and enhancing human voices on both ends of the call. These audio samples highlight the performance difference, allowing you to hear how our speakerphone stands out in providing clear, distraction-free audio.

Experience the clarity that sets us apart. Our speakerphone doesn't just compete – it leads.

Hear a sample of competitor's audio

• https://i.dell.com/is/video/content/dam/ss2/inline-video/products/peripherals/speakers/sp325-sl525/previous-gen-audio.wav

Hear a sample of our Dell speakerphone

• https://i.dell.com/is/video/content/dam/ss2/inline-video/products/peripherals/speakers/sp325-sl525/new-gen-audio.wav

Robust Audio Performance

• 4 Omnidirectional Microphones: Exceptional sound capture from every angle ensures your voice is always heard loud and clear, no matter where you are positioned.
• Al-based Noise Cancellation Microphone: Our advanced technology filters background noise and enhances human voices on both ends of the call, ensuring clear communication anywhere.
• 60mm Speaker: Designed to deliver booming bass, crisp highs, and unmatched sound precision for incredible clarity and depth across
  calls.
• Full Duplex Audio: Both parties can speak and listen simultaneously, creating seamless, natural communication.

Versatile Connectivity

Connectivity options

Enjoy Bluetooth^® 5.3 with Multi-point connectivity, wireless connectivity through Dell audio receiver for added reliability, or the built-in wired USB-C connection for a direct and seamless experience.

Universal device compatibility

Integrated USB-C connection with an in-box USB-A adapter ensures seamless compatibility across devices.

Convenient pairing

Your speakerphone is detected automatically & paired with only one click using Dell Pair - a simple and secure way to connect your speakerphone to your PC.

Reliable Performance

Ensuring trustworthy audio clarity, this wireless speakerphone ensures every word is heard and understood, making your work calls seamless and stress-free.

Up to 12 hours*

• Continuously work all day with a full charge.
  *Based on Dell analysis (talk time mode) of battery life usage, Apr 2025. Results vary depending on use, operating conditions, and other factors.

Reliable and portable

• Dust-tight and water-resistant protection ensures performance in any environment.

Collaboration-ready

• This speakerphone is certified for Microsoft Teams and Zoom, and it is compatible with leading UC platforms.
  Click here for a list of UC Platforms
  https://www.dell.com/support/product-details/en-uk/product/dell-sl525-speakerphone/resources/manuals

Dell Display and Peripheral Manager

Experience Dell’s singular, innovative application to optimise the performance of your entire Dell PC workspace.

Customise your audio experience

With this intuitive software, you can personalise your audio experience by assigning preset modes like Speech, Bass Boost, or Treble Boost, creating tailored audio presets with the Audio Equaliser, and toggling AI noise cancellation on/off to suit your environment. Stay effortlessly updated with the latest firmware updates, ensuring optimal performance and control over your sound environment.

More manageable

Save time and boost IT efficiency with the Dell Device Management Console to manage your Dell peripheral fleet at scale, from a single cloud-based console. Discover expanded Command Line Interface features from Dell Display and Peripheral Manager.

Dell Audio App

Conveniently access your wireless speakerphone controls right from your smartphone and start enjoying clear communication and personalised preferences.

Download the Dell Audio app from the Apple App Store^® or Google Play™ Store.