At a glance
| Mics | 3 |
|---|---|
| Pickup | 2.5 m |
| Talk Time | 30 h |
| BT | 5.1 |
| Certified | Microsoft Teams (Teams model), Zoom |
- Model Sync 40
PolyLast updated on October 2026
Poly Sync 40 Review
- Personal desk GOOD
- Huddle room EXCELLENT
- Meeting room FAIR
- Travel EXCELLENT
Prices, shipping and returns are handled by the retailer.
On this page
Overview
The Poly Sync 40 is a speakerphone for huddle rooms up to about 5 x 5 m. It has three mics, a 50 mm speaker, a 2.5 m pickup range and two status light bars visible from any side.
- Up to 30 h talk time
- Link two units wirelessly
- IP64 and Kensington slot
- USB-A and USB-C
Key Takeaways
- 50 mm speaker
- Phone charging port
- Optional charging stand and desk mount
Best For
- Huddle rooms
- Shared spaces
- Teams rooms
Avoid If
- You want the lightest unit for travel
- Your table is long and you only buy one
Pros & Cons
The Sync 40 is a strong huddle-room speakerphone on paper, with 30 hours of talk time, wireless linking of two units, IP64 and a Kensington slot for shared rooms. It has three mics, fewer than the Speak2 75‘s four, so keep people within its 2.5 m pickup range.
PROS
- Up to 30 h talk time
- Link two units wirelessly
- IP64 and Kensington slot
- USB-A and USB-C
CONS
- Three mics
- 610 g
Review Scores
Score Breakdown
8.6/10 Expert Score
- Mic Array & Full-Duplex8.1/10
- Speaker Clarity & Volume9.2/10
- Connectivity & Daisy-Chaining8.0/10
- Portability & Power9.1/10
- Call Controls & Certifications9.8/10
How this score is calculated
Each criterion is the weighted average of its available spec scores (0–10) from our Speakerphones scoring matrix. Empty specs are skipped, not scored as 0. The Expert Score is the weighted average of the scored criteria, shown out of 10; stars = Expert Score / 20, rounded to the nearest half star.
| Criterion | Weight | From specs | Score |
|---|---|---|---|
| Mic Array & Full-DuplexMicrophones: 3 → 7.5; Pickup Range: 2.5 m → 7.3; Full Duplex: Yes → 10.0; Echo Cancellation: Yes → 10.0; Pickup Pattern: 3-mic steerable array → 6.0 | 35% | 8.1 | 8.1 |
| Speaker Clarity & VolumeMax Output: 89 dB SPL (nominal) → 9.4; Speaker Frequency Range: 75 Hz – 20 kHz → 9.2; Speaker: 50 mm → 7.0 | 25% | 9.2 | 9.2 |
| Connectivity & Daisy-ChainingLink Two Units: Yes (two units, wireless) → 10.0; Connection: USB-A, USB-C, Bluetooth → 9.0; USB Dongle: No (Sync 40+ includes BT600) → 4.0; Bluetooth Version: 5.1 → 8.0 | 20% | 8.0 | 8.0 |
| Portability & PowerTalk Time: 30 h → 10.0; Weight: 610 g → 7.0; Mains Powered: No → 9.0 | 10% | 9.1 | 9.1 |
| Call Controls & CertificationsMute Button: Yes → 10.0; Certifications: Microsoft Teams (Teams model), Zoom → 10.0; Controls: Touch: call answer/end → 9.0 | 10% | 9.9 | 9.8 |
| Expert Score | 8.6/10 | ||
Scores by Use Case
- Personal desk60/100
- Huddle room100/100
- Meeting room40/100
- Travel100/100
Poly Sync 40 Review
Mic Array & Full-Duplex 8.1/10
- Mics 3
- Pickup 2.5 m
- Duplex Yes
Speaker Clarity & Volume 9.2/10
- Max Output 89 dB SPL (nominal)
- Spk Freq. 75 Hz – 20 kHz
- Speaker 50 mm
Connectivity & Daisy-Chaining 8.0/10
- Linking Yes (two units, wireless)
- Connect USB-A, USB-C, Bluetooth
- Dongle No (Sync 40+ includes BT600)
- BT 5.1
Portability & Power 9.1/10
- Talk Time 30 h
- Weight 610 g
- Mains No
Call Controls & Certifications 9.8/10
- Mute Yes
- Certified Microsoft Teams
- Controls Touch: call answer/end
Full Specifications
General
| Best For | Huddle rooms |
|---|---|
| Ideal Room Size | Up to 5 x 5 m |
| Form Factor | Bar |
Microphones
| Microphones | 3 |
|---|---|
| Pickup Range | 2.5 m |
| Mic Frequency Range | 100 Hz – 6.7 kHz |
| Full Duplex | Yes |
| Echo Cancellation | Yes |
| Noise Reduction | Yes |
| Mic Type | 3-mic steerable array |
Speaker
| Speaker | 50 mm |
|---|---|
| Max Output | 89 dB SPL (nominal) |
| Speaker Frequency Range | 75 Hz – 20 kHz |
| Speaker Drivers | 1 |
Battery & Charging
| Talk Time | 30 h |
|---|---|
| Battery | Li-ion, 5000 mAh |
| Charging Time | 5 h |
| Mains Powered | No |
Connectivity
| Connection | USB-A, USB-C, Bluetooth |
|---|---|
| Bluetooth Version | 5.1 |
| USB Dongle | No (Sync 40+ includes BT600) |
| Link Two Units | Yes (two units, wireless) |
| Certifications | Microsoft Teams (Teams model), Zoom |
| Cable Length | 1.05 m |
| Bluetooth Range | 30 m |
| Bluetooth Profiles | A2DP, AVRCP, HFP, HSP, BLE |
Design & Build
| Weight | 610 g |
|---|---|
| Dimensions | 38 x 102 x 273 mm |
| Dust/Water Rating | IP64 |
| Colors | Silver |
| Controls | Touch: call answer/end, mute, volume, programmable button, pairing; buttons: power, wireless daisy chain |
| Mute Button | Yes |
In the Box
| In the Box | Speakerphone, USB-A cable, USB-C cable, quick start guide |
|---|---|
| Warranty | 2 years |
Identifiers
| Model Number | 772C4AA |
|---|
Compatibility
| OS Compatibility | Windows 11, Windows 10, macOS |
|---|
Product Details
| Brand | Poly |
|---|---|
| Model | Sync 40 |
| Model number | 772C4AA |
Price Comparison
| Store | Price | Deal |
|---|---|---|
| Hp.comOfficial Poly store | See price | View deal (opens in a new tab) |
The Verdict
I’d choose the Sync 40 for huddle rooms where one unit needs to last a week and link to a second unit later. The Jabra Speak2 75 is the closest rival, with better music playback and a lighter build. For bigger rooms that can stay plugged in, the Sync 60 is louder and has more mics.
FAQs
Can I link two Poly Sync 40 units?
Yes, wirelessly.
How long does the Sync 40 battery last?
Up to 30 hours of talk time.
What room size is it for?
Poly lists rooms up to about 5 x 5 m.
What controls does the Poly Sync 40 have?
Touch controls for answer/end, mute, volume, a programmable button and Bluetooth pairing, plus power and daisy-chain buttons.
How long does it take to charge?
HP lists under 5 hours.
What is the Bluetooth range?
Up to 30 m.
Is it water resistant?
Yes. HP lists IP64.
How heavy is it?
0.61 kg.
