Poly Sync 40 (2-216874-333) Smart Speakerphone, Bluetooth, USB, IP64

For a video meeting at a desk or in a flexible workspace, the Poly Sync 40 brings a speakerphone, microphones and speaker into one portable unit. It connects to a computer by USB or to a cell phone over Bluetooth.

Its multi-microphone array is designed to reduce echo and background noise, while full-duplex audio supports conversation without taking turns to speak.

Need to move between calls and other audio? The Sync 40 also plays music and multimedia, and its battery can power it for up to 30 hours.

Key points

The Sync 40 is suited to workspaces where calls may happen away from a fixed meeting-room setup. Use the included USB-A cable to connect a PC or Mac, or connect through USB-C with the included USB-A-to-USB-C adapter. A smartphone can connect wirelessly over Bluetooth, giving you a choice of wired computer use or a wireless phone connection.

For calls, the multi-microphone array is designed to reduce noise and echo, and full-duplex audio lets people speak and hear one another at the same time. A visible light bar shows call status, which can help make the device’s current state easier to see in a shared area. The programmable button can be assigned to a function such as play or pause, last-number redial or voice assistant access. In a common area, it can instead be set to manually clear previously paired Bluetooth devices.

The speaker uses a bass-reflex system with dual passive radiators, with audio intended for both voice and music. Its IP64 dust and water resistance and battery life of up to 30 hours add flexibility when there is no convenient power outlet. It can also charge a smartphone, and two Sync 40 units can be paired wirelessly for a larger meeting space. It makes sense if you want one device for calls and everyday audio, with more placement flexibility than a speakerphone that depends on a power outlet.

Usage tips

Choose the connection that fits the device you are using: the USB-A cable is for a PC or Mac, and the included adapter provides a USB-C connection, Bluetooth is available for smartphones. If the speakerphone will be used in a shared space, the programmable button’s option to clear paired Bluetooth devices may be useful. The light bar provides a visible call-status cue.

The IP64 rating is stated as dust and water resistance, not as permission to submerge the unit. If you plan to use it where exposure is a concern, treat that rating as a specific protection detail rather than assuming it is waterproof. The product information does not describe cleaning products or a cleaning procedure, so avoid assuming a particular care method.

How to use it

Connect the speakerphone to a computer with the USB-A cable, or use the included adapter for a USB-C port. For a smartphone, pair it over Bluetooth. Once connected, use it for calls or switch to music and multimedia playback. The programmable button can provide quick access to a selected function, while the light bar helps show call status.

For a larger meeting space, the product information says two units can be paired wirelessly. That gives you another setup option when one speakerphone is not the intended arrangement, without needing to change the basic USB or Bluetooth connection to your device.

Final verdict

The Poly Sync 40 is worth considering if you need a portable speakerphone for a flexible work area and want both computer USB connections and smartphone Bluetooth. Its multi-microphone array, visible call indicator, phone-charging function and stated battery life make it more versatile than a device intended only for wired calls. The option to pair two units is relevant when planning for a larger meeting space.

It may not suit you if your devices require a connection method other than USB-A, USB-C or Bluetooth. The product details also do not specify a cleaning procedure, so choose it for its listed connectivity and call features rather than assuming additional care guidance.