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Black open-ear wireless headphones with ear hooks and charging case

Monster AC210 Open-Ear Headphones Bluetooth 5.4 Black

SKU CH-DV3R-S8B7Y

Open-ear wireless headphones with 12 mm drivers, Bluetooth 5.4 and six hours of battery life per charge

  • Driver size12 mm
  • Headphone styleOpen Ear
  • Power supplyBattery, true
  • ConnectionNo Jack
  • Wearing styleOpen ear
  • Wireless technologyBluetooth
  • Open-ear design keeps ears comfortable and aware of surroundings
  • Bluetooth 5.4 wireless connection for stable audio streaming
  • 12 mm dynamic drivers with PI composite beryllium diaphragms deliver 360° stereo sound
  • 6 hours listening time per charge extends to 30 hours with the charging case
  • IPX5 water resistance protects against sweat and light rain

Open-ear headphones for all-day wear

The Monster AC210 uses an open-ear design with skin-friendly silicone hooks that sit outside the ear canal. This avoids pressure, pinching and the hearing-health concerns of traditional in-ear buds while keeping you aware of surroundings.

12 mm drivers with 6-hour battery

Dual 12 mm dynamic drivers with modified PI composite beryllium diaphragms and 30 mW DAC thrust deliver three-dimensional stereo sound. The buds provide six hours of listening per charge, and the slim case extends total playtime to thirty hours.

Bluetooth 5.4 and IPX5 rating

Wireless connectivity runs on Bluetooth 5.4 for stable pairing, while IPX5 water resistance protects against sweat and rain. Touch controls handle playback and calls, and a hidden pickup hole with adaptive beamforming reduces environmental noise during conversations.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $55.99
Pricier than about 74% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameMonster
Model nameAC210, Monster Open Ear AC210
Part numberMonster Open Ear AC210
Product typeOn-Ear
Product colorBlack
Audio & video
Driver size12 mm
Headphone styleOpen Ear
Wearing styleOpen ear
Noise cancellationNone
Connectivity
Wireless technologyBluetooth
Ports & slots
ConnectionNo Jack
Power
Power supplyBattery, true
Battery pack6 h
Run time6 h
Charging time6 h
Built-in batteryBattery
Size & build
Product weight0.15 kg

Questions about this item

Will the Monster AC210 pair with my laptop that uses an earlier Bluetooth version?

Yes, Bluetooth 5.4 maintains backward compatibility so the headphones will connect to older Bluetooth adapters, though you will be limited to the older version's bandwidth and range.

How can I confirm the 12mm dynamic drivers and DAC are performing correctly after pairing?

Play a familiar track; you should hear clear stereo separation with the 360° spatial effect described by the manufacturer, and the indicator light on the sound chamber will show a steady connection status.

Does the package include the charging case that provides the extra 30 hours, or must I buy it separately?

The slim charging case is included in the box and delivers up to 30 hours of combined listening time; no separate purchase is needed for the case or the USB charging cable.

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