How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-25 · 8 min read · Independent comparison
• RoomyRoc Headphones — biggest strength: a neckband design with retractable earbuds, one-touch Siri/Bixby access, active noise cancellation, and a vibrating call alert so you don't miss calls when the buds are retracted.
• RoomyRoc Headphones — biggest trade-off: it's an in-ear neckband on Bluetooth 4.2 with 28-ohm dynamic drivers, so it's built more for portability and hands-free convenience than for big-driver, room-filling sound.
• JOMILIN B9 — biggest strength: 60 hours of playtime per charge, 40 mm drivers, Bluetooth 5.3, and a foldable over-ear build that also works wired over a 3.5 mm jack when the battery runs down.
• JOMILIN B9 — biggest trade-off: it's a 7-ounce over-ear set with no active noise cancellation — just sound isolation — so it's bulkier and less "wear-it-all-day-around-your-neck" than the RoomyRoc.
• Who each pick is for: RoomyRoc for commuters, runners and anyone who wants a barely-there neckband with voice control; JOMILIN B9 for travelers, long-session listeners and anyone who hates charging.
The RoomyRoc is a neckband wireless stereo headset, and that single design decision shapes everything about it. The band sits around your neck, the earbuds retract with a one-click automatic recycling mechanism, and when you're not listening the whole thing just hangs there like a necklace. The earbuds are in-ear with rounded tips and come with two sets of ear tips in the box, so you can dial in the fit. At 2.04 ounces it's the kind of thing you forget you're wearing — which is exactly the point for exercise and all-day carry.
Feature-wise, this is a convenience-first headset. One touch gets you to Siri or Bixby for calls, texts and navigation, and CVC6.0 noise reduction is there for HD voice calls. You get active noise cancellation as the noise-control mode, plus a vibrating call alert, which is a genuinely thoughtful touch: if the earbuds are retracted and your phone buzzes in your pocket, the band vibrates so you still know someone's calling. Pairing supports two Bluetooth devices at once, and the battery is rated at 12 hours of music, 16 hours of talking and 180 hours of standby.
Who should skip it? If you want deep, physical bass or a big open soundstage, the 28-ohm in-ear dynamic drivers here aren't chasing that. And if you're the type who leaves gear in a bag for weeks, Bluetooth 4.2 and a 12-hour music rating mean you'll be reaching for the charging cable more often than an over-ear with a huge battery. It's a Bluetooth-only headset too — there's no 3.5 mm jack as a fallback.
JOMILIN B9: Who It's For
The JOMILIN B9 is the opposite philosophy: an over-ear wireless stereo headphone built around battery and driver size. The headline number is 60 hours of playtime on a single charge, with a 2-hour full charge time and fast-charging support. That's a travel headphone you can genuinely take on a week-long trip and not think about a charger. The 40 mm drivers cover a 20 Hz–20,000 Hz frequency range, and the design targets deep bass with crisp mids — the classic "enjoy the music and lose yourself" tuning rather than a flat, analytical one.
Connectivity is where the B9 pulls ahead of older Bluetooth gear. It runs Bluetooth 5.3, which is a faster, more stable generation of the standard, and it can pair with two devices at once and switch between them — start a playlist on your phone, then jump to a conference call on your laptop without repairing. The 10-meter range matches the RoomyRoc. And crucially, there's a 3.5 mm jack: after the battery is done, you can plug in and keep listening in wired mode. The RoomyRoc can't do that.
Comfort is clearly the second design pillar. Memory-protein ear cushions and a padded headband are meant to keep long sessions fatigue-free, and an adjustable slider lets you set the fit. It folds down for travel and packs small. It's a 7-ounce headphone in purple, so it's a visible, substantial piece of gear rather than a hidden one. Built-in mic, hands-free calling, and volume controls on the earcup round it out.
Buy it if you want one headphone for flights, commutes, work-from-home calls and long listening sessions, and you'd rather charge once a week than once a day. Skip it if you want something weightless around your neck, if you need active noise cancellation to kill engine drone or office chatter, or if you want voice-assistant access as a primary control. The noise control here is sound isolation — the passive kind that comes from an over-ear seal — not ANC.
Side-by-Side: Which Should You Choose?
• Best for battery life → JOMILIN B9. 60 hours of playtime versus 12 hours of music time, with a 2-hour charge on the B9.
• Best for sound hardware → JOMILIN B9. 40 mm drivers and a 20 Hz–20,000 Hz range versus 28-ohm in-ear dynamic drivers.
• Best for call handling on the move → RoomyRoc Headphones. Vibrating call alert, CVC6.0 noise reduction for calls, and one-touch Siri/Bixby.
• Best for active noise cancellation → RoomyRoc Headphones. It lists ANC as its noise-control mode; the B9 relies on passive sound isolation.
• Best for modern connectivity → JOMILIN B9. Bluetooth 5.3 with dual-device switching versus Bluetooth 4.2.
• Best for travel and long sessions → JOMILIN B9. Foldable over-ear build, memory-protein cushions, padded headband, 3.5 mm wired fallback.
• Best for exercise and hands-free voice control → RoomyRoc Headphones. Sweat-proof neckband, ergonomic curved design, voice-first controls.
• Best for iPhone battery visibility → RoomyRoc Headphones. It supports iOS device power display so you can see the charge level on screen.
If I had to pick one for myself, I'd take the JOMILIN B9. In my opinion, the combination of 60 hours of playtime, 40 mm drivers, Bluetooth 5.3 with dual-device switching, and a wired 3.5 mm fallback covers far more of my actual listening — travel, work calls, long evenings — with fewer compromises. The one thing I'd genuinely miss is ANC.
That said, if your life is movement rather than sitting — running, gym, calls while walking, wanting your headphones to vanish around your neck — the RoomyRoc is the smarter buy. It solves a problem the B9 doesn't even attempt: being invisible, retractable and voice-controlled. Pick based on how you listen, not on which one sounds more impressive on paper.
how to connect wireless stereo headphones
Put the headphones in pairing mode, open Bluetooth settings on your phone or laptop, and select the headset from the list. The RoomyRoc uses Bluetooth 4.2 and can pair with two devices at once; the JOMILIN B9 uses Bluetooth 5.3 and also pairs with two devices, switching between them. Both work within a 10-meter range.
how to connect celly wireless stereo headphones
"Celly" isn't a brand in either of these data sheets, so I can't speak to that specific model. The general process is the same for any Bluetooth stereo headset: power on, hold the pairing button until the indicator flashes, then choose the device in your phone's Bluetooth menu. If it won't appear, make sure it isn't already connected to another device nearby.
how to use celly wireless stereo headphones
how to connect anc wireless stereo headphones
ANC is a feature, not a connection type — you connect an ANC headset the same way as any other Bluetooth headphone. The RoomyRoc lists active noise cancellation as its noise-control mode, so once paired you enable ANC from the headset controls. The JOMILIN B9 does not have ANC; it uses passive sound isolation from its over-ear cushions.
Which should I buy if I hate charging?
The JOMILIN B9, clearly — 60 hours of playtime and a 2-hour charge versus 12 hours of music time on the RoomyRoc. It also has a wired 3.5 mm mode as a backup. If you'd rather have the lighter, neck-worn format, the RoomyRoc is the trade you'd make.
Only the RoomyRoc lists active noise cancellation. The JOMILIN B9's noise control is sound isolation, which comes from the over-ear cushion seal rather than electronics. They're different mechanisms, and ANC is generally the more effective option for constant low-frequency noise like engines.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: APETOO USB C Headphones vs Rolosar Earbuds: HIFI Stereo, Riwbox CT-7 vs JLab: Wireless on Ear Bluetooth Headphones, MOOR Earbuds vs RCA Wave-80: Wireless Headphones with