SPECIFICATIONS

Active Noise-Cancellation: No

Battery Capacity[mAh]: 300

Battery life up to[hours]: 25

Bluetooth Version: Other

Brand Name: MONSTER

Category: Earphones & Headphones

Charging Method: cable

Choice: yes

Codecs: AAC,sbc

Communication: Wireless+Wired

Connectors: Type c

Control Button: Yes

Driver Diameter: 40

Earcups Type: Sealed

Features: With microphone,Apple Siri Support,Google Assistant Support

Frequency Response Range: 20 - 20000

Function: For Internet Bar,for Video Game,Common Headphone,For Mobile Phone,HiFi Headphone,For Outdoor,For Office,For Study

Headphone Pads Material: Synthetic Leather

High-concerned chemical: none

Impedance Range: up to 32 Ω

Is wireless: Yes

Material: ABS,Plastic,Leather

Max Output: 30

Maximum wireless range[m]: 10m-20m

Number Of Drivers: 2

Origin: Mainland China

Package List: User Manual,Charging Cable

Plug Type: NONE

Resistance: 32

Sensitivity: 110

Sound Isolating: Yes

Style: Wireless headphone & headset

Vocalism Principle: Dynamic

Volume Control: Yes

Waterproof: No

Weight[g]: 180

Wireless Type: Bluetooth

With Microphone: Yes

100% Original! Buy with confident!

We are the Monster authorized distributor, all products are come from original factory, so please don't worry about fakes. We also welcome wholesale and dropshipping dealers!

◎ 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.