KIWI design

KIWI design H4 Boost Comfort Battery Head Strap for Quest 3/3S

Name: KIWI design H4 Boost Comfort Battery Head Strap for Quest 3/3S | Dual Fast Charge in 2.5h, Halo Strap Design, Reduce Facial Pressure, Charge VR
Brand: KIWI design
SKU: B0D6W88TCN

Status: KIWI design H4 Boost Comfort Battery Head Strap…: Unavailable on Amazon as of 2026-10-06 10:29 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The KIWI design H4 Boost Comfort Battery Head Strap for Quest 3/3S: Adds up to 3 hours of extra Quest 3/3S playtime; main trade-off: battery and strap add rear weight versus a stock elite strap.

Unavailable on Amazon as of 2026-10-06 10:29 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: KIWI design K4 Boost Battery Head Strap for Meta… — $69.99 on Amazon as of 2026-10-07 20:20 UTC (price may vary).

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Similar: Kawaye for Meta Quest 3S/Quest 2/Quest 3 Head… — $25.99 on Amazon as of 2026-10-07 20:20 UTC (price may vary).

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Similar: Head Strap for Oculus Meta Quest 3S Quest 3 — $16.19 on Amazon as of 2026-10-07 20:20 UTC (price may vary).

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Original listing (currently unavailable) → Compare to similar vr headsets & accessories

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014. For PC VR headsets, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Adds up to 3 hours of extra Quest 3/3S playtime
✓ DualBoost charges strap and headset together in 2.5 hours
✓ 45W adapter delivers 25W to the Quest 3/3S
✓ Halo headrest shifts weight off cheekbones and face
✓ Rear knob makes lying down in VR workable

Cons

✗ Battery and strap add rear weight versus a stock elite strap
✗ Only fits Quest 3 and Quest 3S, not older headsets
✗ Recharging both devices ties up one 45W wall outlet

Manufacturer description

The KIWI design H4 Boost is a battery head strap built for the Meta Quest 3 and Quest 3S, and it solves two problems at once: session length and facial pressure. The integrated battery adds up to 3 hours of extra playtime, so a long sim racing session or a movie night doesn't end with a low-battery warning. The DualBoost charging system tops up both the strap and the headset at the same time, reaching a full charge in about 2.5 hours; the included 45W adapter pushes 25W to the Quest 3/3S, and 60 minutes on the charger gets both to roughly 65% for another 2.5 hours of play. Comfort comes from…

SpecPicks Verdict

SpecPicks scored KIWI design H4 Boost Comfort Battery Head Strap for Quest 3/3S using a rating × review-volume × price-fit model applied to published specs and reviews across the vr headsets & accessories category. KIWI design's vr headsets & accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for vr headsets & accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How much extra battery life does the H4 Boost actually add?

KIWI design rates it at up to 3 additional hours of playtime on a Quest 3 or Quest 3S, on top of the headset's own internal battery.

How long does the H4 Boost take to fully charge?

About 2.5 hours for a full charge of both the strap and the headset using DualBoost. After 60 minutes you reach roughly 65% on both, good for about 2.5 hours of play.

Does it work with the Quest 2 or Quest Pro?

No. The H4 Boost is designed specifically for the Meta Quest 3 and Quest 3S. Check the product listing for KIWI design straps built for other headsets.

Will this reduce the pressure on my face and cheekbones?

That is the design intent. The adaptive front headrest distributes the headset's weight across the forehead and rear cushion, and it can be worn even without the facial interface attached.

Can I adjust the field of view and lens distance?

Yes. A damping slider allows front-to-back FOV adjustment and a headset lever knob handles up-and-down alignment for a clearer image.

Is a charger included, or do I need my own?

A 45W adapter is included and delivers 25W output to the Quest 3/3S while also charging the strap. Check the product listing to confirm regional plug type.

Key Features

Extended Playtime with Enhanced Battery: Enjoy uninterrupted gaming with up to 3 hours of additional battery life; play longer without worrying about running out of power; tailored to your usage scenarios for maximum performance
Dual Fast Charging; Two Times Faster: Power up both H4 Boost and Quest 3/3S simultaneously with DualBoost Charging system; fully charged in just 2.5 hours; 45W adapter delivers 25W output to Quest 3/3S; reach 65% charge(Both HMD&H4 Boost) in 60 minutes for 2.5 hours of playtime
Zero Facial Pressure & Custom Fit: Adaptive front headrest design evenly distributes the weight of Quest 3/3S, reducing facial pressure and offering a comfortable fit for extended use, even without the facial interface; elastic side straps, adjustable top strap, and soft rear cushion ensure a secure fit for all head sizes, ideal for gaming, movie-watching, and productivity
Adjustable FOV & All-Day Ventilation: Damping sider allows front-to-back FOV adjustments, while the headset lever knob provides up-and-down alignment for a clearer experience; innovative ventilation design in the fore cushion keeps the head and face cool during long sessions
Lie Down Comfortably: Integrated adjustment knob enables effortless fitting; enjoy total comfort while lying down on your couch or bed, making it easy to fully immerse yourself in gaming or movies with the H4 Boost Head Strap on Quest 3/3S

Full Specifications

Brand	KIWI design
Color	White
Platform	Meta Quest
Resolution	1800x1920 per eye
Unit Count	1 Count
Display Type	OLED
Model Number	QS03B
Field Of View	52 degrees
Built-In Media	H4 Boost Battery Halo Head Strap
Connector Type	USB Type C
Mfr Part Number	KWQS03BAU
Battery Capacity	3 hours
Sensor Technology	inside-out tracking
Compatible Devices	Meta Quest 3/ Quest 3S, Not for Quest 2
Additional Features	Ventilation Design, DualFast Charging
Battery Average Life	3 hours
Age Range Description	Teen, Adult
Connectivity Technology	USB
Item Dimensions D x W x H	9.45"D x 4.72"W x 8.66"H
Specific Uses For Product	Gaming, Video
Full listing title	KIWI design H4 Boost Comfort Battery Head Strap for Quest 3/3S \| Dual Fast Charge in 2.5h, Halo Strap Design, Reduce Facial Pressure, Charge VR Headset and Battery Strap

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