Poly Savi 8420-M MS Office Stereo Wireless DECT Headset
PRODUCT DESCRIPTION
Poly Savi 8420-M MS Office Stereo Wireless DECT Headset (2-221104-205 / 8L5B3AA) - Local Warranty
Poly Savi 8420-M Microsoft Teams Certified Stereo DECT Headset with ANC
The Poly Savi 8420-M Office is the Microsoft Teams certified build of HP's stereo Savi 8400 DECT headset — published by HP as the "Savi 8420 Office Stereo Microsoft Teams Certified DECT 1880-1900 MHz Headset". It is the only Savi 8400 model HP specifies with active noise cancelling, making it the flagship of the range for Teams-standardised Singapore offices.
Savi 8420-M Specifications: Active Noise Cancelling and 180 m DECT Range
HP specifies active noise cancelling, a noise-cancelling microphone with close conversation limiting, up to 13 hours of talk time on a single charge, a three-hour recharge and up to 590 ft / 180 m of roaming range line of sight. The headset weighs 160 g and runs DECT on 1880–1900 MHz with Bluetooth v5.2 for mobile.
One Headset for Teams, Desk Phone and Mobile
The Office base keeps all three sources connected at once, so a Teams user can move from a Teams meeting to a PSTN desk line to a mobile call without unplugging anything. Wideband audio at 100 Hz – 6,800 Hz keeps voices natural; multimedia mode opens out to 20 Hz – 20,000 Hz.
Hearing Protection, Security and Conferencing
SoundGuard DIGITAL protects against sound levels above 118 dBA, DECT security certification keeps the wireless link encrypted, and up to four headsets can be conferenced onto a single base for training and side-by-side listening.
Poly Savi 8420-M Datasheet — Technical Specifications
General
| Model | Poly Savi 8420-M Office |
| Part Number | 2-221104-205 / 8L5B3AA |
| Manufacturer | Poly (HP) |
| Product Type | Wireless DECT headset system with Office base |
| Wearing Style | Stereo (both ears), over-the-head |
| Variant | Microsoft Teams certified (-M) |
| Room / Use Case | Desk-based office and hybrid working; roaming within the office |
| Warranty | Local Warranty (Singapore) |
Wireless & Connectivity
| Wireless Technology | DECT 1880–1900 MHz (this build) with Bluetooth v5.2 |
| Roaming Range | Up to 590 ft / 180 m line of sight; up to 180 ft / 55 m in a typical office |
| Connectivity | 3-way — computer, desk phone and mobile |
| Computer Connection | Office base via the supplied USB Type-A or USB Type-C cable |
| Desk Phone Connection | Telephone interface cable (TIC) supplied |
| Mobile Connection | Bluetooth |
| Multi-Headset Conferencing | Conference up to 4 headsets on a single base |
| Wireless Security | DECT security certified |
| Microsoft Teams | Certified for Microsoft Teams |
Audio
| Microphone | Noise-cancelling with close conversation limiting |
| Active Noise Cancelling (ANC) | Yes |
| Audio Bandwidth | Wideband 100 Hz – 6,800 Hz; multimedia mode 20 Hz – 20,000 Hz |
| Hearing Protection | SoundGuard DIGITAL — protects against sound levels above 118 dBA |
Battery & Charging
| Talk Time | Up to 13 hours of talk time on a single charge |
| Standby Time | Up to 50 hours |
| Charge Time | Three hours |
| Charging | Charging cradle on the Office base |
Design & Power
| Headset Weight | 160 g |
| Base | Poly Savi Office base with charging cradle |
| Power | AC power adapter supplied with the Office base |
| Part Number | 2-221104-205 / 8L5B3AA |
| Warranty | Local Warranty (Singapore) |
Specifications are taken from HP's published product data for this exact part number and from the official Poly Savi 8400 Office Series datasheet. Where HP does not publish a figure for this SKU, no figure is stated.
Compatibility & Software Support
| Desk Phone | Analogue / digital desk phone via the supplied telephone interface cable (TIC) |
| Computer | Office base connects over USB Type-A or USB Type-C and presents as a USB audio device to your softphone |
| Mobile | Bluetooth pairing to a smartphone or tablet |
| Microsoft Teams | Certified for Microsoft Teams |
| Chromebook | HP lists the Savi 8400 Office Series as Certified for Chromebook |
| Simultaneous Connections | All three sources can stay connected; answer and switch from the headset or the base |
| Conferencing | Up to 4 headsets can be conferenced onto one base for side-by-side listening |
| Device Management | HP does not publish a Poly Lens specification for this part number. Ask SourceIT to confirm current management options before standardising a fleet. |
The Savi 8400 Office base is a wired-in hub: it keeps your desk phone line, your computer and your mobile all live at once, so a single headset covers every call your Singapore office takes without unplugging anything.
Package Contents & Savi 8400 Series Ordering Information
In the box
- Wireless headset
- Office base
- Charging cradle
- AC power adapter
- USB Type-A cable
- USB Type-C cable
- Telephone interface cable (TIC)
Poly Savi 8400 Office Series — ordering information
| Poly Savi 8410 UC Office Mono | 2-221101-205 / 8L5A7AA — Monaural, UC |
| Poly Savi 8410-M MS Office Mono | 2-221102-205 / 8L5A9AA — Monaural, Microsoft Teams certified |
| Poly Savi 8420 UC Office Stereo | 2-221103-205 / 8L5B2AA — Stereo with ANC, UC |
| Poly Savi 8420-M MS Office Stereo (this listing) | 2-221104-205 / 8L5B3AA — Stereo with ANC, Microsoft Teams certified |
| Poly Savi 8445 UC Office Convertible | 2-221107-205 / 8L5B4AA — 3-in-1 convertible, UC |
| Poly Savi 8445-M MS Office Convertible | 2-221108-205 / 8L5B6AA — 3-in-1 convertible, Microsoft Teams certified |
Related Poly DECT headsets at SourceIT
| Poly Savi 7410 UC Office Mono | Savi 7400 Office series — the mid-range DECT alternative |
| Poly Savi 7420 UC Office Stereo | Savi 7400 Office series, stereo |
| Poly Savi 8245 UC Office Convertible | Savi 8200 Office series — the previous-generation convertible |
Datasheet & Downloads
| HP Poly product page — Poly Savi 8420-M MS Office Stereo Wireless DECT Headset | Official HP product data for this part number |
| HP Poly Savi 8400 Office Series page | Series overview and feature list |
| Savi 8410/8420 Office DECT user guide (PDF, HP-hosted) | Setup, pairing, range settings and controls |
All links were checked and resolving at the time this page was published. If you need a quotation, stock position or lead time for Singapore, contact the SourceIT sales team.
Frequently Asked Questions — Poly Savi 8420-M
What is the difference between the Savi 8420-M-M (MS) and the Savi 8420-M UC version?
They are the same headset hardware. The -M part number is the Microsoft Teams certified build, which HP lists as Certified for Microsoft Teams. The UC part number is the general unified-communications build. Choose the -M SKU if your organisation standardises on Teams certification: see the Savi 8420 UC Office Stereo.
Which Savi 8400 model should I choose — 8410, 8420 or 8445?
The Savi 8410 is a monaural (single-ear) headset weighing 115 g, so you stay aware of the room. The Savi 8420 is the stereo model at 160 g and is the only Savi 8400 that adds active noise cancelling. The Savi 8445 is the 3-in-1 convertible at 21 g worn over the ear, and it ships with a hot-swappable spare battery for unlimited talk time.
Does the Poly Savi 8420-M have active noise cancelling?
Yes. The Savi 8420 is the only model in the Savi 8400 Office Series that HP specifies with active noise cancelling, alongside the noise-cancelling microphone with close conversation limiting that the whole series carries.
How far can I walk from the base while on a call?
HP rates the Savi 8400 Office Series at up to 590 ft / 180 m line of sight, and up to 180 ft / 55 m in a typical office with walls and partitions — comfortably the length of most Singapore office floors.
Do I need a compute appliance, licence or dongle for this headset?
No. The Office base is the receiver, and it is included. There is no separate licence or room PC. You plug the base into your computer with the supplied USB Type-A or USB Type-C cable, and into your desk phone with the supplied telephone interface cable. A separate Savi DECT USB dongle is only needed for the dongle-based Savi models, not for this Office system.
Can colleagues join a call on the same base?
Yes. HP specifies that up to four headsets can be conferenced together on a single Savi 8400 Office base, which is useful for training, call listening and side-by-side coaching.
Does the Poly Savi 8420-M come with warranty in Singapore?
Yes. Every Poly Savi 8420-M sold by SourceIT comes with local Singapore warranty and a GST invoice.
