Introducing the KIWI K4 Duo: A New Audio Head Strap for Quest 3 & 3S

Oh man, where do I even start? So, KIWI Design just rolled out this thing called the K4 Duo. It’s, uh, this funky new strap for the Quest 3. You know, the headsets? Anyway—no, seriously—it’s pretty cool ’cause it works with both the Quest 3 and the slightly fancier 3S.

Picture this: you’re adjusting these nifty “all-in-one” speakers that twist and shout in whatever direction you want, like they’re doing their own dance. Officially, they call it the ‘K4 Duo AIO Audio Head Strap with Battery’—yeah, kind of a mouthful, right? Basically, it lets you flick between your headset’s sound or the strap’s audio. Just plug it into the USB-C, and ta-da.

Get this, it’s packing two 2650mAh batteries. Weighs about 459 grams—which doesn’t really mean much to me, but maybe it’s light? Has the bells and whistles like their other straps: turn wheel (think of it like a hat dial?), dual charging, squishy memory foam padding, and a top strap that screams “I’m here to stay.”

I mean, I’m not really ready to say it’s the best accessory ever—that’s, like, a big deal—but we gotta test it more. You remember KIWI’s K4 Boost Battery Strap from last year? Total knockout. We loved it. Maybe this one will join the cool kids’ table on our Quest 3 accessory list?

Oh, shoot, almost forgot. You can snag the K4 Duo on KIWI’s site or Amazon. They’re asking $159.99, but there’s some launch discount knocking it down to $139.99. So, do with that what you will. Maybe it’s a sign or whatever.