KIWI design K4 Duo All-in-One Audio Battery Head Strap for Meta Quest 3/3S

Overview

The KIWI design K4 Duo All-in-One Audio Battery Head Strap (model KW-QA05B) is the definitive comfort and performance upgrade for Meta Quest 3 and Meta Quest 3S owners. Instead of juggling a separate power bank, awkward cable, and third-party headphones, the K4 Duo combines a high-capacity built-in battery, integrated fold-away earphones, and a precision twist-dial fit system into a single, balanced head strap. The result is a longer, more immersive VR session with none of the clutter — available now at OutGeeked's Gaming Accessory collection.

Key Features

• 20.4 Wh Built-in Battery: Seamlessly extends your Meta Quest 3/3S playtime by approximately 2 to 2.5 hours, letting you push through longer gaming, fitness, or creative sessions without interruption.
• 45W DualFast Charging: The strap and headset recharge simultaneously through a single connection, bringing both back to full power in approximately 2.5 hours — dramatically faster than standard charging solutions.
• Integrated Fold-Away Earphones: Built-in earphone arms tilt and adjust for precise positioning around your ears, then rotate down or fold completely away when you prefer the Quest's own speakers — no cables, no clip-ons.
• Flexible Audio Switching: Instantly switch audio output between the Quest's native speakers and the K4 Duo's built-in earphones to suit your environment or preference.
• Twist Dial Fit Adjustment: A tool-free twist dial lets you dial in a secure, personalised fit in seconds, while the memory-foam padding distributes weight comfortably for extended wear.
• Balanced Weight Distribution: At 459 g, the rear battery counterbalances the front headset weight, reducing neck strain and facial pressure compared to using the stock strap with an external battery.
• Clean White Design: Colour-matched to the Meta Quest 3/3S in crisp white, the K4 Duo looks like an intentional part of the headset rather than an afterthought.
• Plug-and-Play Compatibility: Designed exclusively for the Meta Quest 3 and Meta Quest 3S — no firmware, no apps, no complicated setup required.

Who It's For

The K4 Duo is built for VR enthusiasts in Lebanon who are tired of cutting their sessions short when the Quest's battery runs out. Whether you're deep in a VR fitness routine, grinding through a long RPG, or collaborating in a virtual workspace, the K4 Duo keeps you in the game. It's equally ideal for anyone who wants cleaner, more immersive audio without the hassle of separate earbuds falling out mid-session. If you own a Meta Quest 3 or Meta Quest 3S and want a single accessory that solves battery life, comfort, and audio all at once, this is it.

Specifications