Poly Savi 8445 DECT Wireless Convertible Headset

A headset that dies mid-shift because you forgot to charge it overnight is a problem no comfortable ear cushion fixes. The Poly Savi 8445 wireless headset solves that with two batteries included in every box — swap the spent one for the charged one without dropping the call, and the shift-length battery anxiety just goes away.

It's the convertible model in Poly's current Savi 8400 series — over-the-ear, over-the-head, or behind-the-neck, all three included — with three-way connectivity to a desk phone, computer, and Bluetooth mobile phone running through one base. If you've been comparing this against an older Savi 8240 or 8245 listing, there's a reason you're only finding one model now, not two.

Build the exact Savi 8445 you need

One choice: which certification matches your platform.

• UC Certified. Works with Zoom, Cisco, Google Meet, and other major UC platforms without a single-brand certification badge.
• Microsoft Certified (Savi 8445-M). Formal Microsoft Teams certification with a dedicated Teams button on its version of the base.

Why the Poly Savi 8445 wireless headset replaced two separate products

Poly used to sell this convertible design as two different SKUs — the Savi 8240 with a single battery, and the Savi 8245 with a hot-swap battery as a step-up option. Per Poly's own published guidance, that split is gone: there's no "Savi 8440." Everything converged into the Poly Savi 8445 wireless headset, and the spare battery that used to be the premium upgrade now ships in every box as standard.

Real active noise cancellation, not just a quiet microphone

The Poly Savi 8445 wireless headset runs hybrid active noise cancellation in the ear cups, confirmed on Poly's own product listing — a separate system from the noise-canceling microphone, which filters what your caller hears rather than what you hear. Close Conversation Limiting adds a third layer, keeping your own voice from carrying to the desk next to you. Three distinct jobs, one headset.

How much DECT security do you actually need?

The Poly Savi 8445 wireless headset is DECT Security Certified, which Poly's own guidance says covers the security expectations of most organizations. For buyers with stricter requirements, Poly's own FAQ points elsewhere: the Savi 7300 or 7400 series, built to DECT Security Step C with 256-bit AES encryption and — on the 7300 line — no Bluetooth radio at all. If your policy is doing more than checking a box, that's worth knowing before you order.

Convertible vs a fixed wearing style — which Savi 8400 fits

The Poly Savi 8445 wireless headset is the pick if different people will wear the same headset, or if your own preference changes through the day — headband in the morning, ear hook after lunch. If everyone on your team wears it the same way every day, the mono Savi 8410 or stereo Savi 8420 skip the convertible hardware and cost less.

Range, battery, and what to expect day to day

The Poly Savi 8445 wireless headset reaches up to 590 ft line of sight, dropping to a real 180 ft in a typical office once walls and cubicles are factored in. Each battery runs up to 13 hours of talk time with 50 hours of standby; swap to the spare when the first runs low and the ceiling disappears entirely. At 21 grams, it's light enough that a full shift in any of its three wearing styles doesn't turn into ear fatigue by the afternoon.

A base built for your whole fleet, and for IT to manage remotely

The Universal Office Base included with the Poly Savi 8445 wireless headset also pairs with Savi 7300, 7400, and 8200 series headset tops, useful for a phased rollout across a mixed deployment. Poly Lens software gives IT remote firmware updates, settings configuration, and fleet-wide visibility without touching every headset by hand. Up to four Savi headsets total can conference into a single base for training or group calls, and remote hands-free answering on the desk phone leg requires an HL10 handset lifter or EHS cable, sold separately.

This is the headset for someone who wants the flexibility of three wearing styles and doesn't want battery anxiety added on top. Poly built the spare battery into the price here rather than making it a decision — the only real choices left are which certification you need and which wearing style you reach for that morning.