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◎ Monster Harmonic N21 ↓

Monster Harmonic N21 wireless over‑ear headphones feature Bluetooth 6.0, a 40mm dynamic driver, and dual EQ modes for punchy bass or clear vocals. With up to 25 hours of battery, foldable compact design, soft protein earpads, clear call noise reduction, and universal compatibility—ideal for daily music, calls, and travel.

◎All-New Bluetooth 6.0↓

Built with an upgraded Bluetooth 6.0 chip for faster, more stable connections. Instant pairing, zero lag, quicker transmission, lower power draw, and reduced latency, total performance maxed out.

◎40mm Large Dynamic Driver↓

Equipped with a massive 40mm diaphragm for thunderous, impactful bass that delivers stunning sonic punch. Crisp, transparent mids and highs create an immersive, concert-like audio experience.

◎Dual EQ Sound Modes↓

Switch between two custom-tuned EQ modes: Bass Mode and Vocal Mode. Experience powerful, punchy bass or crystal-clear, pristine vocals all with a single tap.

◎Long-Lasting Endurance↓

Powered by a high-capacity 300mAh battery for up to 25 hours of non-stop music playback. Small but mighty, it keeps you powered all day long.

◎Foldable & Compact Design↓

Upgraded ultracompact build with flexible foldable structure for easy storage. Folds down to a mini size that fits effortlessly into your bag, saving space at home or on the go.

◎Crystal-Clear Calls↓

Equipped with high-sensitivity microphones that actively suppress ambient noise and precisely enhance your voice. Enjoy interruption-free conversations even in noisy environments—just like talking face-to-face.

◎Universal Compatibility↓

Fully compatible with major systems including Android ,iOS and Wins. Works seamlessly with mobile phones, tablets, laptop and other Bluetooth-enabled devices for maximum flexibility in daily use.

◎All-Day Comfort Wear↓

Dual softness with protein leather and plush memory foam. Professionally engineered for extended-wear comfort.

◎Easy Control↓

Intuitive button controls let you easily play, pause, and switch tracks/EQ with a simple click. Put complete music control right at your fingertips.
●EQ Button
- Single tap: Switch between Vocal Mode/Bass Mode
- Long press for 2 seconds: Turn Siri on/off
●Power Button
- Single tap: Play/Pause/Answer/End call
- Long press for 3s/5s: Power on/Power off
●+/– Buttons
- Long press: Previous/Next track
- Single tap: Volume up/Volume down
●TypeC Port
- Connect to power for charging
●3.5mm Port
- Connect 3.5mm audio cable for wired listening, lower latency & power saving

◎Specifications↓

●Product Name: Monster Harmonic N21
●Bluetooth Chip: Bluetrum
●Bluetooth Version: V6.0
●Operating Frequency: 2.402–2.480GHz
●HD Audio Codec: AAC/SBC
●Transmission Distance: ≥10m
●Frequency Response: 20–20000Hz
●Driver Size: φ40mm
●Battery: 300mAh 3.7V
●Charging Port: Type-C
●Charging Time: 1–2 hours
●Playback Time: Approx. 25 hours