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Design and Build

The M27 earphone is Liquipel Nano coated, ensuring you that it’s sweat resistant. Even if you drop it in a bowl of water, or drip sweat on it, it won’t get broken due to its IPX4 certification.

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Sound Quality

The GranVela Bluetooth Headphones M27 gives you realistic sound. The highs are clear, mids are decent, and the bass is thumping. With all of these combined, you’re assured of a listening experience that’s out of this world.


These wireless headphones have the latest Bluetooth version 4.1 technology. They offer a more efficient connection to your devices.


The talk time on these wireless headphones can last up to four and a half hours while playing time lasts up to four hours. On standby, they can stay up to two hundred eighty hours. You can fully charge it after two hours.

Call Quality and Noise Isolation

The GranVela Bluetooth Headphones M27 isn’t just for listening music. They’re also for voice calls. They have a seamless auto switching feature which allows the user to switch between audio listening to making or taking calls. Calls are made easier with the inline microphone. Plus the CVC 6.0 Noise Cancellation technology filters the noise allowing better phone conversations.

What’s in the Box

Inside the box, you can find three sets of ear tips that are of different sizes. These are small, medium, and large. The ear tips also come with three different sizes of in-ear hooks. There’s also a user manual, a micro USB charging cable, and the GranVela Bluetooth headphone M27.

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GranVela gives their costumers a 12-month warranty for their products, including the GranVela Bluetooth headphones M27. If you aren’t satisfied with it, you can return the headphone within 30 days of purchase. You’re guaranteed to have your money back.


I just love these wireless headphones, and I also love the new ear buds. The extra ear buds can help you fit the wireless headphones with different ear sizes. Plus the instruction booklet and a charging make it easier for me to use the wireless headphones. They’re comfortable to use. My ears don’t feel any pressure while using it. I love them, and I know the future buyers will like them, too.

Product Comparison


  • GranVela Bluetooth Headphones M27

  • DimensionDimension
  • WeightWeight
  • BatteryBattery
  • Battery LifeBattery Life
  • CableCable
  • Charging TimeCharging Time
  • ManufacturerManufacturer
  • OriginOrigin
  • PricePrice

  • Dimension4.2 x 3.6 x 1.6 Inches
  • Weight2.1 Ounces
  • BatteryRechargeable Battery
  • Battery LifeOn standby: 280 hours
    In use: 4.5 hours
  • CableIncluded
  • Charging Time2 hours
  • ManufacturerGranVela Co.,Ltd
  • OriginChina
  • Price$

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GranVela Bluetooth Headphones M27















  • The sound is incredible.
  • It’s comfortable to use.
  • It connects fast with other devices.

Last update on 2022-02-22 at 09:05 / Affiliate links / Images from Amazon Product Advertising API