{"product_id":"kiwi-design-k4-duo-aio-audio-head-strap-with-battery","title":"KIWI design K4 Duo AIO Audio Head Strap with Battery","description":"\u003cp\u003eYou've just invested in a Meta Quest 3 or 3S. The headset is impressive — but after 90 minutes, reality catches up with the immersion: the original strap pulls forward, your face bears all the weight, the battery dies and the built-in speakers simply aren't up to what you see on screen.\u003c\/p\u003e\n\n\u003cp\u003eThe K4 Duo exists to solve exactly these four problems. In one piece.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eSessions that don't stop at the worst moment\u003c\/h2\u003e\n\n\u003cp\u003eThe Quest 3's native battery lasts about 2 hours under intensive use. It's often right when you're most in the game, in the middle of a client demo, or halfway through a film, that it gives up.\u003c\/p\u003e\n\n\u003cp\u003eThe K4 Duo integrates a \u003cstrong\u003e20.4 Wh\u003c\/strong\u003e battery that extends your runtime by \u003cstrong\u003e2 to 2.5 extra hours\u003c\/strong\u003e. And thanks to the \u003cstrong\u003eDualFast 45W\u003c\/strong\u003e system powered by dual PD chips, a single USB-C cable charges both the headset and the strap simultaneously. Full charge time: \u003cstrong\u003eunder 2h30\u003c\/strong\u003e. You plug in, wait half a film, and you're good for half a day.\u003c\/p\u003e\n\n\u003ch2\u003eNo more neck pain, no more facial pressure\u003c\/h2\u003e\n\n\u003cp\u003eThe Quest 3 is unbalanced by design: all the electronics are at the front, and the standard strap doesn't compensate. Result: the weight pulls forward, the foam compresses your face, and after an hour you're thinking as much about your discomfort as the experience itself.\u003c\/p\u003e\n\n\u003cp\u003eThe K4 Duo places the battery at the back of the head, acting as a natural counterweight. The headset's centre of gravity moves closer to the centre of your skull — \u003cstrong\u003ezero facial pressure, head upright, neck relaxed\u003c\/strong\u003e. Even after two hours of intensive play. The memory foam on the headband adapts to your head shape and stays where you put it.\u003c\/p\u003e\n\n\u003ch2\u003eSound that genuinely changes the experience\u003c\/h2\u003e\n\n\u003cp\u003eThe Quest's built-in speakers are fine for a quick demo. For true immersion — cinema, narrative gaming, simulation — they fall short. The sound bleeds into the room, everyone hears it, and you lose the sensation of being inside the virtual environment.\u003c\/p\u003e\n\n\u003cp\u003eThe K4 Duo integrates \u003cstrong\u003etwo 40mm dynamic drivers\u003c\/strong\u003e positioned directly over your ears, adjustable on 3 degrees of freedom to fit any head shape. The difference is immediate: the bass is there, the audio details come through, you're inside it. A physical button lets you switch in one second between the K4 Duo earphones and the native speakers — handy in demos to share audio with your audience without removing the headset.\u003c\/p\u003e\n\n\u003cp\u003eAnd for the Quest 3S, which has no 3.5mm jack: the K4 Duo runs entirely through USB-C. No adapter, no compromise.\u003c\/p\u003e\n\n\u003ch2\u003eOne cable to manage everything\u003c\/h2\u003e\n\n\u003cp\u003eSome solutions need one cable for charging, another for audio, sometimes an adapter in between. That's exactly the kind of friction that breaks immersion before you even put the headset on.\u003c\/p\u003e\n\n\u003cp\u003eWith the K4 Duo, a single USB-C cable handles both \u003cstrong\u003epower and audio\u003c\/strong\u003e. You plug in, you wear it, you play. Nothing else.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWho is it for?\u003c\/h2\u003e\n\n\u003cp\u003eThe K4 Duo is designed for those who use their Quest seriously: long gaming sessions, VR training, professional demonstrations, immersive experiences. If you wear the headset for more than an hour at a time, show VR to clients or learners, or simply want to stop juggling cables and accessories — this is the upgrade that brings it all together.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Meta Quest 3 \/ Quest 3S\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 459 g\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 250 × 280 × 135 mm\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eBattery capacity:\u003c\/strong\u003e 20.4 Wh\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMax charging power:\u003c\/strong\u003e 45W (45W adapter recommended)\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eFull charge time:\u003c\/strong\u003e ~2.5 h (headset + strap simultaneously)\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eAdded battery life:\u003c\/strong\u003e +2 to 2.5 h depending on usage\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSpeakers:\u003c\/strong\u003e 2 × 40mm dynamic, adjustable on 3 axes\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eAudio connection:\u003c\/strong\u003e USB-C (Quest 3S compatible, no jack needed)\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eCertification:\u003c\/strong\u003e Made for Meta\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 18 months\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eManufacturer ref.:\u003c\/strong\u003e KW-QA05B-SPF\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KIWI design","offers":[{"title":"Default Title","offer_id":54042960527701,"sku":"KW-QA05B-SPF","price":139.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3342\/5446\/files\/KIWI_Designe_K4_Duo_-_Audio_Head_Strap_and_battery.jpg?v=1780244285","url":"https:\/\/komete-xr.com\/en\/products\/kiwi-design-k4-duo-aio-audio-head-strap-with-battery","provider":"Komete XR","version":"1.0","type":"link"}