Watches & Wearables / hearing protection
Howard Leight (Honeywell) Impact Sport R-01526
D0 No Radio — No radio at all. It cannot phone home.
The unplug test
Nothing changes, because nothing was ever connected. The earmuffs run on two AAA batteries and use a local amplify-and-compress circuit to let range commands and conversation through while clamping down hard, sudden noise -- the same behavior on day one and after ten years, with or without a phone, an app, or an internet connection anywhere nearby. There is no pairing, no account, and no firmware to update.
Why this tier: The Impact Sport R-01526 is an analog electronic earmuff: built-in directional microphones amplify ambient sound up to 4x and compress it back down once it hits 82dB, entirely as a local audio circuit with no data radio of any kind. Honeywell's own grantee (2AJKI) files FCC intentional-radiator grants for its Bluetooth-equipped hearing protection -- 'Impact Sport Bluetooth' (2AJKI-ISEMBT) and two in-ear Bluetooth models (2AJKI-ISINBT, 2AJKI-ISINHTBT) -- but the plain, non-Bluetooth Impact Sport R-01526 has no FCC filing under that grantee at all. That is the sibling-control pattern: this vendor demonstrably files when a model has a radio, and the absence for this model is meaningful rather than a search miss.
Specifications
| Account required | none |
|---|---|
| Works offline | fully |
| Forced firmware updates | no |
| Radios | none |
| FCC ID | no intentional-radiator grant found |
| Local control | none |
| Phones home | none |
| Parts available | yes |
| Availability | in stock |
| Price band | $25-45 (seen 2026-09-03) |
| Vendor risk | 0 / 3 |
Where to buy
Open questions
- Exact current US retail price per single unit (as opposed to the 5-pack case price seen) was not independently confirmed within budget; price_band is estimated from typical single-unit listings seen across retailers, not a single authoritative figure.
- Model number, NRR rating and battery type were originally corroborated from an aggregated search page, which has been removed as not being a source. These details are not load-bearing for the D0 — that rests on the FCC sibling-control absence — but they are now carried by the Honeywell store listing alone and would benefit from the printed manual.
Sources
Class A is primary (manual, FCC filing, teardown). Class B is corroborated community reporting. Class C is never sufficient alone.
- A https://fccid.io/2AJKI
Full grant list for grantee Honeywell Safety Products USA, Inc. (2AJKI): five grants total, all for named Bluetooth or telemetry products (Impact Sport Bluetooth, two in-ear Bluetooth hearing-protection models, a firefighter telemetry system, and 'Sync Wireless'). No grant exists for a plain/non-Bluetooth Impact Sport model -- the sibling control establishing that the vendor files when a model has a radio, making the absence for R-01526 meaningful. — accessed 2026-09-03 - A https://fccid.io/search.php?q=Howard+Leight+Impact+Sport+Bluetooth
Confirms FCC ID 2AJKI-ISEMBT, 'Impact Sport Bluetooth', 2402-2480 MHz, filed by Honeywell Safety Products USA in 2021 -- the Bluetooth sibling model whose existence makes the plain model's lack of a grant meaningful rather than a search gap. — accessed 2026-09-03 - B https://www.honeywellstore.com/store/products/honeywell-howard-leight-impact-sport-electronic-earmuffs-5-pack-1030942.htm
Manufacturer-affiliated retail listing for the plain (non-Bluetooth) Impact Sport Electronic Earmuffs: describes built-in directional microphones amplifying ambient sound to a safe 82dB, amplification up to 4x, automatic compression above 82dB, 22dB passive NRR, 4-hour auto shut-off, and no mention of Bluetooth or wireless features anywhere in the product description -- distinct listing from the separately-sold 'Bluetooth Impact Sport' model. — accessed 2026-09-03
History
- 2026-09-03 — First published at D0.
- 2026-09-03 — Removed a citation pointing at a DuckDuckGo results page routed through a text-extraction proxy. It supported product details rather than the tier, and the D0 is unaffected: it rests on grantee 2AJKI filing for the Bluetooth Impact Sport variants and not for this one.
Last verified 2026-09-03 — 3 days ago.