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🎧 Elevate your calls with comfort and clarity—never miss a beat or a meeting!
The Zerone K21 Bluetooth Headset combines a powerful 300mAh battery delivering up to 48 hours of talk time and 70 days standby, with Bluetooth 5.0 for stable connections up to 10 meters. Its ergonomic, sweat-resistant design features a 180° rotating earphone for customizable comfort, while CVC noise reduction ensures crystal-clear calls. Ideal for professionals seeking reliable, all-day wireless communication with simple controls and broad device compatibility.
| ASIN | B07C3X82JN |
| Additional Features | Microphone Included, sports-and-exercise, water-resistant, wireless |
| Age Range Description | Adult |
| Antenna Location | Calling, Exercising |
| Audio Driver Type | Dynamic Driver |
| Battery Average Life | 24 Hours |
| Battery Charge Time | 2.5 Hours |
| Best Sellers Rank | #220,029 in Electronics ( See Top 100 in Electronics ) #3,652 in Over-Ear Headphones |
| Bluetooth Range | 10 Meters |
| Bluetooth Version | 5.0 |
| Brand Name | Zerone |
| Cable Features | Without Cable |
| Color | Black |
| Compatible Devices | Cellphones, Tablets, Laptops, Desktops |
| Connectivity Technology | Wireless |
| Control Method | Touch |
| Control Type | Touch Control |
| Controller Type | Integrated |
| Customer Reviews | 3.8 3.8 out of 5 stars (43) |
| Earpiece Shape | Over-Ear, Hook |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS), Silicone |
| Frequency Range | 20 Hz - 20,000 Hz |
| Headphone Folding Features | Over Ear |
| Headphone Jack | USB |
| Headphones Ear Placement | Over Ear |
| Is Autographed | No |
| Manufacturer | Zerone |
| Model Name | Zeroneko04sgat19 |
| Model Number | Zeroneko04sgat19 |
| Noise Control | Active Noise Cancellation |
| Number of Items | 1 |
| Specific Uses For Product | Business |
| Style Name | Modern |
| Theme | Professional and Active Lifestyle |
| UPC | 654936821576 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |
| Wireless Technology | Bluetooth |
F**R
Wow, such quality and convenience for a small price !!!
I tested the new ear piece and the quality is great. I can listen to my Spotify music and when a call comes in I just click once on the ear piece and the call quality is great both from the call and caller side. If you want stereo you could buy one for each ear, but just one is great by itself. With just one, it allows you to hear any other nearby noise, which a headset blocks. Just one is also good is you want to hear music going to sleep without bothering a partner next to you. Spotify now allows you to set a timer for how long you want to play sleep music before it shuts off. Full charging time is just 2 hours.
J**N
One was great , but the second one is horrible
I bought {2} of these and one of them works great , but the 2nd one after a couple of days no matter on my husbands phone or on my phone you can barely hear the person even with the volume all the way up on your phone . That is the main reason for the 3 stars
P**O
battery life is great
For me it is all about the battery life and with this one it is all day and more. sound is clear but I'm usually listening to books on take so not sure about music. Comfortable so this one is perfect for me.
G**O
No volume.
Bad product.
J**.
Eh
The fit was great. The sound not so much.
I**�
Don't work
It doesn't work 😕
S**Y
Works well, but too big and heavy.
Right away you will notice that it's kinda big and heavy. For you nerds it weighs 14 grams, which is about as much as a AAA battery weighs. Thick and bulky behind your ear. The tube that runs from the top of your ear to your ear hole is too long for me. The length, weight and bulk is why I am returning it. The sound and voice transmission is fine, which is why I gave it three stars rather than one. I am 5'9"; maybe if you are 6'5", or just have an unusually large head, this will be perfect for you.
W**N
Impressed
This is my second K21, first one broke, I love the battery life and how easy it is to use.
M**A
O microfone é bem potente, ótimo volume e isola muito o som externo, vem com algumas borrachinhas para melhor ajustar no ouvido e o melhor é a bateria pois usei no escritório mais de uma semana ouvindo música mais de 8 horas e ainda participando de conferências.
Trustpilot
2 months ago
1 month ago