MK3 OH20 MAX Wireless Stereo Headphone

Some headphones ask for the charger every night. The mk3 oh20 max asks for it about once a week — up to 120 hours of wireless playtime on a single charge, per the manufacturer, from an 800mAh battery in a lightweight over-ear shell. That is the whole pitch of the mk3 oh20 max: marathon battery in a price class where nothing else lasts this long, backed by three ways to play and a fit built for the long haul.

The numbers tell the story. An 800mAh cell — big for a headphone this light — takes about 2 hours to fill completely, and then the mk3 oh20 max plays for days: five full days of listening at a stretch, per the manufacturer’s 120-hour rating. Charge it on Sunday, forget the cable exists, and listen through the week — commutes, classes, work shifts, late-night playlists — without ever watching a battery icon.

Everything below describes the mk3 oh20 max only, with every figure taken from this listing’s own verified research notes — nothing is borrowed from any other product page on this store. One housekeeping note before you read on: this is the MK3/no-brand OH20 Max (SKU MK3-OH20), a separate listing under its own title, with its own price and stock. It is not the MKB OH20 Max listing elsewhere on the store — same white-label OH20 line, different brand token, different listing. Check that you are on the right page for the brand badge you want, then read on for what the mk3 oh20 max itself delivers.

Up to 120 Hours of Playtime

The card above leads with the number: “Up to 120 Hours of Playtime,” with the subline “800mAh battery · charge in about 2 hours.” Up to 120 hours of wireless playtime on a charge — per the manufacturer — puts the mk3 oh20 max in rare company: five 24-hour days of continuous listening, or weeks of ordinary daily use. Students, commuters, and anyone who hates babysitting a battery will feel the difference immediately.

The honesty matters as much as the number. The “up to 120 hours” figure is the manufacturer’s rating — the card says so right on the image — and real-world runtime depends on volume and use. What is not in doubt is the 800mAh cell itself, which is simply a lot of battery for a headphone this light. Two hours on the cable, days off it: that is the mk3 oh20 max deal, stated plainly.

Folds Flat for the Bag

The card above shows the mk3 oh20 max folded flat — earcups tucked in, profile slim — with the headline “Folds for the Bag” and the subline “Compact foldable design for travel.” A 120-hour battery means nothing if the headphone is a burden to carry; the foldable design means the mk3 oh20 max disappears into a backpack, tote, or laptop bag between sessions.

Travel headphones should be there when you need them and invisible when you don’t. The foldable frame, the lightweight build, and the padded construction work together: fold it for the metro, wear it for the flight, toss it in the bag for the campus day. The card states the benefit in four words — “Folds for the Bag” — and the design backs it up.

Stable Bluetooth 5.3 Wireless

The card above states the wireless story: “Stable BT 5.3 Wireless,” with the subline “Fast pairing · 10m range.” Bluetooth 5.3 is the modern wireless standard — efficient, quick to pair, and steady within about 10 metres of your phone, so the music keeps flowing while your phone charges across the room. The mk3 oh20 max is built wireless-first, and the connection is the kind you stop thinking about.

Fast pairing means the ritual disappears: open the phone’s Bluetooth list, tap the mk3 oh20 max, and you are listening. The 10m range covers the real-world uses — phone in pocket, bag, or desk drawer while you move. No dongles, no cables in the default setup: just the wireless stereo the title promises.

Three Ways to Play

The infographic above gathers the mk3 oh20 max’s key specs in one glance — BT 5.3, 800mAh, 120h playtime, 10m range, foldable — marked as an illustrative reconstruction, with the playtime figure footnoted per manufacturer. And then there is the versatility no single number captures: three ways to play. Bluetooth 5.3 wireless for everyday freedom, a 3.5mm AUX wired connection when the battery finally runs low or you want a cable, and TF-card playback for music straight from a memory card with no phone anywhere nearby.

The TF-card mode is the sleeper feature. Load a playlist onto a TF memory card, slot it in, and the mk3 oh20 max becomes a standalone music player — perfect for runs, study sessions, and commutes where you would rather leave the phone in your pocket. Wireless, wired, or card-only: whatever your day looks like, the mk3 oh20 max has a mode for it.

Comfort + Hands-Free Calls

The macro above zooms into the part of this headphone you feel all day: the soft padded ear cushion, with the headline “Comfort + Calls” and the subline “Padded cushions · built-in mic for hands-free calls.” The over-ear fit sits around the ears rather than on them, the cushions are soft for long sessions, and the adjustable headband dials in the fit — comfort engineered for the 120-hour battery to actually make sense.

The second half of the card is the built-in microphone: hands-free calls without taking the headphones off. The mic handles calls on the go — a quick answer mid-commute, a study-group call at the desk — so the mk3 oh20 max covers work and play in one frame. Comfort for the music, a mic for the interruptions: the card states both, and the notes verify both.

Inside the MK3 OH20 Max

The x-ray render above is an illustrative reconstruction of the mk3 oh20 max’s internals — not a teardown photo — with leader-line callouts marking the parts that matter: the speaker driver, the 800mAh battery, and the Bluetooth board. The headline reads “Inside the MK3 OH20 Max” with the subhead “Big battery, small footprint,” and the image’s own footnote says it honestly: “*per manufacturer · Illustrative reconstruction.”

The engineering story is the whole product: a speaker driver for the stereo sound, an 800mAh battery cell that dwarfs what most budget headphones carry, and the Bluetooth 5.3 board tying it together — all inside a lightweight foldable frame. Big battery, small footprint, as the card says: the mk3 oh20 max is built around the one thing its buyer cares about most.

Worn Fit for the Long Haul

The photo above is the mk3 oh20 max worn: a commuter in a car at night, the black over-ear cups with the small “MK3” mark on the outer shell, city lights streaking past the window. This is where the whole spec sheet converges — a 120-hour battery, a foldable frame, and cushions built for long sessions mean a headphone you can wear through the entire commute without thinking about it.

Every lifestyle shot for this listing uses male models in premium everyday scenes — campus, metro, road trip, the night commute — with no text on the photos. The point is simple: the mk3 oh20 max is an everyday-carry headphone, not a shelf piece. Wear it out the door, fold it into the bag, charge it on Sunday.

Your Daily Driver

The promo hero above shows the mk3 oh20 max as it is: black frame, oval earcups, matte padded headband, the “MK3” mark on the outer cup — with the orange “120H Battery” chip and the headline “Your Daily Driver,” sublined “120h battery*. Folds flat.” The asterisk points to the honest footnote: “*Per manufacturer.” The card closes the sale the way the whole page opened it: the marathon headphone.

“Daily driver” is the right frame for a value-led marathon headphone. It is not trying to be a flagship — it is trying to be the pair you reach for every single day, the one that never dies on you, the one that folds into your bag and costs less than a week of rickshaw fares. The battery number earns the headline; the honesty earns the trust.

Commute-Proof

The final card is the mk3 oh20 max against night-city bokeh: “Commute-Proof,” with the subline “BT 5.3 · hands-free calls · 10m range.” The commute is the mk3 oh20 max’s natural habitat — Bluetooth 5.3 holding steady with the phone in your pocket, the built-in mic taking calls without breaking stride, and a battery that makes “did I charge it?” a question you stop asking.

Every figure on every card on this page comes from the verified notes for this listing: 800mAh, up to 120 hours per manufacturer, about 2 hours to charge, Bluetooth 5.3, 10m range, foldable, padded, built-in mic, BT plus AUX plus TF card. Nothing invented, nothing borrowed from any other page, no Bluetooth version invented — 5.3 is the verified one — no driver size, no ANC, no water resistance claimed.

Specifications

All figures are taken from the verified research notes for the mk3 oh20 max — battery, playtime, and charging figures are per manufacturer marketing. No driver size is claimed, because the notes do not establish one; no ANC or water resistance is claimed, because the notes do not describe them.

Why Buy From Gadget Superb

Order the mk3 oh20 max from Gadget Superb with cash on delivery anywhere in Bangladesh — pay in cash when the parcel arrives, with no advance payment, card details, or OTPs ever asked. Delivery takes 1–3 working days inside Dhaka (৳70) and 2–5 working days outside Dhaka (৳120). Every order carries 7-day easy returns: keep the headphones in original condition with the box and accessories, and start a return with your order number via hotline 09638054751, care@gadgetsuperb.com, or Messenger.

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Frequently Asked Questions

How long does the mk3 oh20 max battery last?

Up to 120 hours of wireless playtime on a single charge, per the manufacturer — roughly five full days of continuous listening, or weeks of normal daily use, from the 800mAh battery. A full recharge takes about 2 hours. Real-world runtime varies with volume and use; the figure quoted is the manufacturer’s rating, footnoted as such on the product imagery too.

How long does a full charge take?

About 2 hours for a full charge, per the manufacturer. That two-hour charge buys the 120-hour playtime above — the charge-to-playtime ratio is the mk3 oh20 max’s whole value proposition.

What are the three ways to play music on the mk3 oh20 max?

One, Bluetooth 5.3 wireless for everyday listening. Two, the 3.5mm AUX cable for wired backup — included in the box — when the battery runs low. Three, TF memory-card playback: slot a loaded card in and the mk3 oh20 max plays music with no phone nearby at all.

Which Bluetooth version does it use, and what is the range?

Bluetooth 5.3, with about 10 metres of wireless range per the manufacturer. Pairing is fast and the connection is steady through normal phone-in-pocket, phone-on-desk use.

Is this the same as the MKB OH20 Max?

Not the same listing. This page is the MK3 OH20 Max (SKU MK3-OH20) — a separate store listing with no brand term assigned, its own price, and its own stock. The MKB OH20 Max is a different listing under a different brand token elsewhere on the store. They share the OH20 white-label line, but you should buy from the listing that matches the brand badge you want; nothing on this page is quoted from any other listing.

Can I take calls on the mk3 oh20 max?

Yes — the built-in microphone supports hands-free calls, so you can answer without taking the headphones off. It is the “Calls” half of the Comfort + Calls story the research notes verify.

Does the mk3 oh20 max fold for travel?

Yes. The mk3 oh20 max has a foldable design — the earcups fold in so the headphone packs flat into a backpack, tote, or carry-on. The “Folds for the Bag” card on this page shows it folded.

Is it comfortable for long listening sessions?

The over-ear fit sits around the ears rather than on them, the cushions are soft, and the headband is adjustable — the comfort side of the design the research notes call out for extended listening. The lightweight build helps: an 800mAh battery without the weight penalty you would expect.

What comes in the box with the mk3 oh20 max?

Per the product notes: the MK3 OH20 MAX headphone, a charging cable, an AUX cable, and a user manual. The AUX cable in the box is what makes the wired backup mode work out of the gate.

What warranty does the mk3 oh20 max come with?

a 7-day store warranty

How long does delivery take, and what are the charges?

Inside Dhaka, delivery costs ৳70 and takes 1–3 working days; outside Dhaka, it costs ৳120 and takes 2–5 working days. These are estimates, not guarantees. Your order ships once you place a cash-on-delivery order.

What is the price of the mk3 oh20 max in Bangladesh?

The current price is shown on the product page and can change during sales, so no figure is quoted here. Check the live mk3 oh20 max page on Gadget Superb for today’s price — that is what you pay in cash on delivery, plus the standard delivery fee.