KIWI design Audio Head Strap with Battery for Meta/Oculus Quest 3/3S, K4 Duo DualFast Charging Headset, VR Accessories with Balanced Design for Enhanced Sound Effects & Playtime
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To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Sunday, Mar 15
Features
- All-in-One Audio Head Strap with Battery: The K4 Duo Headset revolutionizes your VR experience by combining premium audio and charging into a single, streamlined solution. Unlike other accessories that require multiple cables, our patented single-cable design delivers both power and crystal-clear sound simultaneously.
- High-Quality Sound, Immersive Experience: The K4 Duo AIO is equipped with dual 40mm dynamic drivers, delivering balanced sound and deep bass to enhance your immersion. Instantly toggle between deeply immersive headphones and the headset's built-in speakers with just one button press. Perfect for when you need to quickly hear your surroundings or share audio with friends.
- DualFast 45W Charging: Powered by dual PD chips, our advanced charging system juices up both your headset and K4 Duo at maximum speed through just one USB-C connection. With 45W max input power, you can achieve a full charge in just 2.5 hoursthat's 30% faster than standard charging solutions. Never miss a moment in VR due to a low battery again.
- Engineered for Perfect Balance & Comfort: K4 Duo Audio Head Strap achieves a near-perfect weight distribution with your Quest 3/3S. The strategically positioned headphones act as a counterweight, making rapid head movements feel more stable and natural during intense gameplay. 3-degree-of-freedom adjustable headphones provide a customized fit for every head shape and size.
- Safe and Durable, Reliable Use: The K4 Duo AIO is built with high-quality battery cells, certified by NTC and UL, and rigorously tested in TUV laboratories, ensuring product safety and reliability, so you can enjoy your VR experience with peace of mind.
Release date: June 23, 2025
Package Dimensions: 15.12 x 14.29 x 4.57 inches; 2.2 Pounds
Type of item: Electronics
Item model number: QA05B
Item Weight: 2.2 pounds
Manufacturer: Shenzhen Hongjiantou Technology Co., Ltd.
Batteries: 2 Lithium Polymer batteries required. (included)
Date First Available: May 22, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Mar 15
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Super comfy head strap and the audio and battery charger work amazingly!
Reviewed in the United States on January 4, 2026 by Eric Behrends
Great comfortGreat product couldn't recommend more to the long term player.The compatibility, the battery life, the sound quality top notch.
Reviewed in the United States on December 14, 2025 by Sean H Sean H
Definitely a comfort upgrade from the original strap. The extra battery life is essential. I do dislike that while charging the battery pack, it will stop charging the headset, which will then run out of battery if you're not careful. The headphones are good quality and comfortable on top of my ears, but they sit awkwardly on the sides sometimes and get caught against the plastic. Still, manageable issues for an otherwise very useful product.
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Reviewed in the United States on November 5, 2025 by Dandsomest
Feels great around my top and back of head and the audio I can hear all around me without even having to put them to my ears. Excellent addon
Reviewed in the United States on December 17, 2025 by Rodrigo Castillo Jr.
Rcvd quickly. Well made, not a flimsy piece of junk. Easy connection. Good quality sound through microphone.
Reviewed in the United States on December 29, 2025 by Rebecca Haines
The KIWI audio headset is the first attempt for external audio for the Quest 3/3S. The sound quality is very good and the headset itself is very comfortable. But the foam on the earphones are irritating to me and I wish they would make over the ear headphones. Plus the KIWI headset is a battery strap but doesn’t allow swappable batteries and that limits the amount of time I can play in VR. So if u want a comfortable headstrap with good audio but limits your gametime this is the headset for you; I would like more comfortable earphones and a way to increase my play time in VR
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Reviewed in the United States on September 1, 2025 by Eagledocstew Eagledocstew
Love it ive used it so much worth it wish the head phone quality was better but it's fine for the price
Reviewed in the United States on December 28, 2025 by william hartwell jr
Outstanding. Bought it for the audio improvement. I didn't want to mess with headphones or earbuds. Audio quality is very good and an order of magnitude better than the built in speakers. Comfort is also good, with bets feel on my face and head. I wish this had a fan built in, as i sweat a lot, but i think the audio improvement is more important than a fan. Obviously, the battery gives more play time, as well.
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Reviewed in the United States on July 4, 2025 by Gregory