How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want marathon battery life and a spare pair in the box for the price of one, choose Picun 2PACK; if you need serious active noise cancelling and Hi-Res LDAC audio for flights and noisy commutes, choose acer OHR703. That's the whole decision in one line. Everything below is me unpacking why those two strengths matter more than the spec-sheet noise around them.
• Picun 2PACK's biggest strength: two complete headphones in one purchase, each rated for 120+ hours of playtime, with a 3.5mm cable included so they work even when the battery is flat.
• Picun 2PACK's biggest trade-off: no active noise cancelling at all, and a Bluetooth 5.3 connection rather than the newest chip generation.
• acer OHR703's biggest strength: up to 45dB adaptive hybrid ANC plus LDAC Hi-Res audio at up to 990kbps — a genuinely different class of listening for loud environments.
• acer OHR703's biggest trade-off: you're buying one pair, not two, and the headline 160-hour figure only applies with ANC switched off.
• Buy the Picun 2PACK if you want a pair for yourself and a pair for a family member, or you simply refuse to charge things.
• Buy the acer OHR703 if you commute, fly, or work in an open office and want the noise gone.
The Picun 2PACK is built around one idea: you should not have to think about charging. Each headphone carries a 1000mAh battery rated for more than 120 hours of playback per charge. Picun frames that as roughly 30 days of listening at 4 hours a day, and the math holds up. For anyone who has ever sat down on a plane with a dead headset, that number is the entire pitch.
The audio side is a dual 40mm dynamic driver setup with three EQ modes — Pop, Bass Boost and Rock — cycled by pressing the EQ button twice. There's also a low-latency mode you toggle by pressing power three times, which is the kind of detail that matters if you're gaming or watching video and hate lip-sync drift. Bluetooth 5.3 covers up to 33 feet, and there's touch control plus a built-in mic for hands-free calls.
Comfort is handled with PU leather and elastic sponge padding, an adjustable headband, and 60° rotating earcups — which also makes them fold down small. In the box you get a 3.5mm audio cable and a USB charging cable. Picun backs it with a one-year refund guarantee, a two-year warranty and what it calls lifetime user support.
Who should buy it: commuters, students, gym-goers, frequent travellers, and anyone buying for two people at once. Who should skip it: if your main problem is engine roar on a plane or chatter in an open-plan office, this headphone has no ANC to throw at it. It's a comfort-and-endurance play, not a silence play.
The acer OHR703 is aimed squarely at the listener who wants the world turned down. Its adaptive hybrid ANC is rated to cancel up to 45dB, and Acer specifically calls out airplanes, subways and offices as the environments it's tuned for. Adaptive is the key word — the system adjusts to the noise around you rather than applying one fixed level of cancellation.
When you do need to hear something, the Ambient Sound Mode brings the outside in with a single tap, so you catch announcements, traffic or a colleague saying your name without pulling the headphones off. That's a small feature that quietly changes how you use a headphone all day.
Audio-wise, this is the more ambitious of the two. LDAC support pushes up to 990kbps over Bluetooth, paired with a 40mm dynamic driver, 32 ohm impedance, 20Hz frequency response and 105dB sensitivity. Acer rates Bluetooth 6.0 here, with ultra-low packet loss and a 33-foot range. Latency is listed at 40 milliseconds. Battery is up to 160 hours with ANC off, a full charge takes about 2 hours, and a 10-minute quick charge buys you hours of listening.
Physically, it weighs 246g (8 ounces) with protein leather over-ear cushions and an adjustable headband. It folds, and it ships with a polyester carrying case measuring 8.5 × 7 × 10 inches. Controls are touch plus push buttons, and it charges over USB Type-C. Acer includes a 2-year manufacturer warranty.
Who should buy it: flyers, subway commuters, open-office workers, and anyone who wants Hi-Res wireless audio. Who should skip it: if you need two pairs, or if ANC simply isn't something you'd use, you're paying for capability you won't touch.
Side-by-Side: Which Should You Choose?
• Best for two people → Picun 2PACK, no contest. Two complete headphones, two sets of accessories.
• Best for noise cancelling → acer OHR703. 45dB adaptive hybrid ANC versus none at all.
• Best for sound quality potential → acer OHR703, thanks to LDAC at up to 990kbps and Hi-Res certification.
• Best for wired fallback → Picun 2PACK, which includes a 3.5mm audio cable; the Acer lists USB Type-C for wired connectivity.
• Best for travel packing → acer OHR703, which ships with a dedicated carrying case.
• Best for lightness → acer OHR703 at 246g; Picun doesn't publish a weight in its spec sheet.
• Best for low-latency gaming and video → acer OHR703 on paper (40ms listed), though Picun offers a dedicated low-latency mode worth trying if gaming is your focus.
• Best for call handling → either. Both have touch controls and a built-in mic, with Picun spelling out its tap gestures in detail.
I'd buy the acer OHR703. In my opinion, noise cancelling and LDAC are the two features that actually change how a headphone feels day to day, and the OHR703 delivers both without compromising on battery, comfort or portability. The Picun 2PACK is a smart buy for a very specific shopper — someone equipping two people, or someone whose real enemy is a charging cable. But if I'm picking one for myself, I want the quiet.
FAQ
The acer OHR703, clearly. It has adaptive hybrid ANC rated to 45dB. The Picun 2PACK has no active noise cancelling — its PU leather and sponge padding give only passive isolation.
On the published figures, yes — 160 hours with ANC off versus 120+ hours for the Picun. But remember the Acer's number assumes ANC is disabled, and ANC is the main reason to buy it. With ANC running, expect that gap to shrink considerably.
Yes, in different ways. The Picun 2PACK includes a 3.5mm audio cable in the box. The acer OHR703 lists USB Type-C for wired connectivity alongside Bluetooth.
The acer OHR703, in my opinion. Its ANC is explicitly tuned for airplane noise, it folds into a supplied carrying case, and the 10-minute quick charge is genuinely useful at an airport gate. The Picun 2PACK wins on endurance, but endurance doesn't cancel a jet engine.
Both listings change over time, so check the current price on Amazon using the button on this page before deciding — I don't quote prices here because they move.
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See also: Creative Zen Air SXFI vs OPPO Enco Air5s, Sennheiser EPOS I GSP vs sarlar VR Gaming Headphones, LC-dolida Sleep Headphones vs JKNKCO NE91: Noise Blocking, QXUFV Earbuds vs Generic Hybrid Noise Cancelling