AH-C840NCW*

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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.

Quiet your world, sharpen your focus: With adaptive active noise cancelling, effortlessly switch between blocking distractions and engaging with your surroundings. Whether you’re focusing on work, a workout, or your favorite playlist, stay connected with the right balance of sound isolation and ambient awareness.

All-day listening for life on the go: With 10 hours of playback on a single charge with ANC off, or 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.

Feel the comfort, hear the difference: 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.

Audio & ANC:

• Noise Canceling: Adaptive Hybrid Noise Cancelling
• Transparency Mode: Yes
• Driver Size: 12 mm
• Driver Type: Free-Edge bio cellulose
• Adjustable EQ: Yes

Bluetooth:

• Quick Pair: Google Fast Pair, Windows Swift Pair
• Bluetooth Version: 5.3
• Bluetooth Codecs: AAC, SBC, LC3
• Auracast: Yes
• Multipoint: Yes

Battery & Charging:

• Battery Life–Earbuds: 10 hours (ANC off); 7 hours (ANC On)
• Battery Life with Case: 35 hours (ANC off); 24 hours (ANC On)
• Charging Cable Type: USB-C to USB-C
• Wireless Charging (Case): Yes
• Quick Charge: 5 min for 1 hr playback
• Case Charge Time to 100% with buds: 2 hours

Voice Calls, Comfort & Fit:

• Number Microphones: 2
• Tips: S, LONG S, M, L

Controls:

• Touch Controls: Yes, customizable
• App: Yes, Denon Headphones

General:

• Water Resistance: IPX4
• Earbud Dimensions: 35.0 x 21.3 x 25.4 mm
• Earbud Weight: 5.1 g
• Case Dimensions: 58 x 48 x 28 mm
• Case Weight: 54 g