The AH-C840NCW brings Denon’s legendary high-performance sound to sleek, sweatproof earbuds for dynamic lifestyles. Active noise cancellation, seamless connectivity, and up to 35 hours of total battery time* mean effortless listening anywhere life takes you.
- Active noise cancelling
- Up to 35 hours of listening*
- Premium drivers adapted from flagship headphones
- IPX4-rated water protection
- Bluetooth LE Audio and Auracast ready
- Dual microphones for crystal clear calls
With adaptive active noise cancelling, whether you’re focusing on work, a workout, or just diving into your favorite playlist, stay connected with the right balance of sound isolation and ambient awareness.
With 10 hours of playback on a single charge* with ANC off, 7 hours with ANC on, and 5-minute quick charging, you’ll never have to worry about your playlist dropping out mid-workout or drained earbuds during an important call. And with IPX4-rated sweat and splash protection, the beat goes on, no matter where your adventures take you.
You don’t have to sacrifice comfort for great sound on the go. Reveal the detail in your favorite songs with high-performance earbuds with a fit that’s so comfortable you’ll forget they’re there—but the vivid, spacious sound will remind you.
Tune out distractions with adaptive active noise cancellation or choose Transparency mode to stay aware of your surroundings.
Enjoy 10 hours of playback on a single charge with ANC off, or 7 hours with ANC on*. The case charges the earbuds on-the-go for additional listening time*.
Two strategically placed microphones in each earbud focus on your voice while minimizing background noise so both callers experience crystal-clear, distraction-free sound.
Whether you’re powering through a workout or dashing through a downpour, your earbuds stay in place and keep performing. They’re built tough with IPX4-rated protection to resist sweat and splashes, keeping up with your every move.
State-of-the-art Bluetooth technology provides superior audio and power performance and seamless sharing.
Power up fast and keep momentum going with 5 minutes of charging to fuel an hour of continuous listening. Wireless charging lets you charge without the clutter.
- Noise Cancelling – Adaptive Hybrid Noise Cancelling
- Transparency Mode – Yes
- Driver Size – 12 mm
- Driver Type – Free-Edge bio cellulose
- Adjustable EQ – Yes
- Quick Pair – Google Fast Pair, Windows Swift Pair
- Bluetooth Version – 5.3
- Bluetooth Codecs – AAC, SBC, LC3
- Auracast – Yes
- Multipoint – Yes
Battery Life–Buds
10 hours (ANC off);7 hours (ANC On)*
*Testing performed by Denon in January 2025 using a production AH-C840NCW unit and software paired with a smartphone. Playback track was a stereo AAC-encoded file. Volume was set to 50% with active noise cancellation disabled, and then tested again at the same volume level with active noise cancellation enabled. Actual battery life varies based on device settings, environment, usage, and additional factors.
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