How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want proven active noise cancelling from a brand that built its name on it, choose Bose QuietComfort 35; if you need marathon battery life and the newest Bluetooth standard for less commitment, choose Wentronic Y04.
• Bose QuietComfort 35 — biggest strength: Genuine Bose ANC heritage, a 20-hour battery, NFC tap-to-pair, Bose AR motion sensing, and Alexa built in. Its plush synthetic protein-leather cushions and hard-shell case round out a travel-ready package.
• Bose QuietComfort 35 — biggest trade-off: This is a Certified Refurbished Series I unit with a 90-day limited warranty and a possible generic box, running the older Bluetooth 4.1 standard.
• Wentronic Y04 — biggest strength: A 48-hour battery, Bluetooth 5.3 with 40 ms low-latency audio, Hi-Res certified sound, and 40 mm dynamic drivers — all in a foldable over-ear design.
• Wentronic Y04 — biggest trade-off: It carries a 1-year warranty and a lighter plastic build, and it is not a Bose — the noise-cancelling tuning and brand ecosystem are simply different.
• Who each pick is for: Bose QC35 for the frequent flyer who wants proven ANC; Wentronic Y04 for the long-haul listener who wants maximum playtime and modern Bluetooth.
The QuietComfort 35 Series I is the headphone that made "Bose noise cancelling" a household phrase, and the spec sheet shows why it still earns its reputation. It offers world-class active noise cancellation with three adjustable levels you can toggle via the Action button or the Bose Connect app. Volume-optimized EQ keeps the audio balanced whether you're listening quietly on a plane or pushing the volume on a commute.
What sets it apart from most competitors is the ecosystem. NFC pairing means you tap your phone and you're connected — no menus. Built-in voice prompts guide you through Bluetooth setup. Bose AR adds a multi-directional motion sensor that can deliver contextual audio based on where you are (unlocked via a firmware update). And it's Alexa-enabled, so you can manage your day without touching your phone. The 20-hour battery, 10-meter Bluetooth range, and included USB charging cable, backup audio cable, airline adapter, and hard-shell carry case make it a complete travel kit.
Who should buy it: Frequent flyers who value proven ANC, app-based control, and voice assistant integration over cutting-edge Bluetooth specs. Who should skip it: Anyone who wants the newest Bluetooth version, the longest possible battery life, or a factory-sealed retail box. This is a Certified Refurbished product with a 90-day limited warranty, so if a long warranty matters to you, look elsewhere.
The Wentronic Y04 takes a different approach: it leads with raw endurance and modern connectivity. The headline is 48 hours of continuous playback on a single charge — more than double the Bose's 20 hours. For anyone who hates charging cables, that number alone is worth the look. Bluetooth 5.3 with 40 ms latency keeps audio and video in sync for movies and gaming, and it plays nicely with iOS, Android, and PC.
Sound-wise, the Y04 uses 40 mm dynamic drivers with a 20 Hz–20,000 Hz frequency range and Hi-Res certified reproduction. The over-ear earcups are cushioned for extended wear, and the whole thing folds up for travel. Active noise cancellation is on board for the office, home, or a noisy cabin. Weighing in at 0.61 kg with a plastic enclosure in silver, it's built for comfort and portability rather than premium materials.
Who should buy it: Long-haul listeners, students, and remote workers who want the longest battery and the latest Bluetooth without fuss. Who should skip it: Anyone who specifically wants Bose's ANC tuning, NFC pairing, app-based EQ, or a hard-shell travel case. The Y04 ships with just a user manual and a 1-year warranty — no airline adapter, no backup cable.
Side-by-Side: Which Should You Choose?
• Best battery life → Wentronic Y04. 48 hours versus 20 hours is not close.
• Best modern connectivity → Wentronic Y04. Bluetooth 5.3 and 40 ms low latency beat Bluetooth 4.1.
• Best for air travel → Bose QuietComfort 35. The airline adapter, hard-shell case, and NFC pairing are built for the airport.
• Best for voice assistants → Bose QuietComfort 35. Alexa is built in; the Y04 does not list assistant support.
• Best for movie and gaming sync → Wentronic Y04. The 40 ms latency figure is the spec that matters for lip-sync.
• Best for app control and EQ → Bose QuietComfort 35. The Bose Connect app handles noise levels and firmware updates.
• Best warranty coverage → Wentronic Y04. One year versus 90 days limited on the Bose refurb.
In my opinion, I'd buy the Bose QuietComfort 35 if noise cancellation is the reason I'm shopping. The three-level ANC, NFC pairing, Alexa integration, and complete travel kit (airline adapter, backup cable, hard case) make it the more capable headphone for flights and focused work — and the 90-day refurb warranty is a fair trade for Bose engineering. But if my priority is getting through a week of listening on one charge with the newest Bluetooth standard, I'd take the Wentronic Y04 without hesitation. Decide which of those two you actually are, then check the current price on Amazon before you commit.
The Bose QC35 has adjustable three-level ANC and the brand's signature tuning, so I'd give it the edge for pure noise blocking. The Y04 also has ANC, but the spec sheet doesn't detail its levels or tuning, so the Bose is the safer bet if quiet is your goal.
Bose rates the QC35 at about 20 hours, while the Wentronic Y04 claims up to 48 hours of continuous playback. If you want to go days between charges, the Y04 is the clear pick; 20 hours is still enough for a long-haul flight and a layover.
Yes, on paper. The Y04 uses Bluetooth 5.3 with 40 ms latency, while the QC35 uses Bluetooth 4.1. Newer Bluetooth generally means more stable connections and better audio/video sync, so the Y04 wins here — though the Bose adds NFC tap-to-pair, which the Y04 doesn't list.
It's a Certified Refurbished product: tested, cleaned, inspected, and repackaged, shipping with all relevant accessories and a 90-day limited warranty, possibly in a generic box. You get genuine Bose hardware, but not a factory-sealed retail package or a full-length warranty.
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