If you want a magnetic 4-pin replacement cord for a bone conduction headset, smartband or smartwatch — the small spare that decides whether an open ear headphones gift for teens keeps working past the first lost cable — choose Haourlife Replacement Magnetic Charging; if you need a long Micro-USB cable with up to 3A fast charging for Bluetooth speakers, over-ear headphones, gaming headsets and controllers, choose JMDDS USB Charger Charging.
• Haourlife's biggest strength: it covers a connector type almost nobody stocks locally — a 7.62mm-pitch, 4-pin magnetic interface used on bone conduction headphones, smartbands and smartwatches — and it handles both charging and data transfer.
• Haourlife's trade-off: it only fits that one niche interface, the cord is a short 60cm (24 inches), and Haourlife explicitly rules out Bose Alto smart glasses and similar smart eyewear.
• JMDDS's biggest strength: it is the practical every-household cable — 5 feet of Micro-USB with up to 3A current and a stated 15W ceiling, covering a long list of JBL, Beats, Bose, Sony and Anker audio gear.
• JMDDS's trade-off: it is Micro-USB only, not USB-C, and the compatibility list has real gaps — it does not cover JBL Charge 4 or Flip 5, for example.
• Pick Haourlife if the device in your hand has a magnetic 4-pin charging port with a 7.62mm pitch and you need a spare or replacement.
• Pick JMDDS if you are charging a Micro-USB speaker, headset, in-ear case or game controller and you want the extra reach of a 5-foot cord.
Haourlife is solving a very specific annoyance. Some bone conduction headphones, fitness bands and smartwatches skip standard USB ports entirely and use a magnetic puck-style connection with a 4-pin layout on a 7.62mm pitch. When that proprietary cord frays, disappears into a backpack, or gets chewed by a pet, you cannot borrow a friend's cable or grab one at a drugstore. This replacement exists exactly for that moment. It's a copper-core cord with a USB connector on one end and the magnetic 4-pin head on the other, and Haourlife lists it for both charging and data transmission — so it is not purely a power-only lead.
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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-20 · 7 min read · Independent comparison
Who should buy it: anyone replacing a lost or damaged magnetic 4-pin cable for a bone conduction headset, a smartband or a smartwatch, and anyone building a teen gift package around an ear clip or open-ear style headset that uses this connector. A spare is the smart move — the gift only stays useful while the cable exists. Who should skip it: anybody whose device charges over Micro-USB or USB-C, and anyone hoping to use it with Bose Alto smart glasses or similar smart eyewear, which Haourlife states outright this cable will not fit. Also skip it if you need serious length; 60cm is short by design. Measure the gap between your outlet and where the device sits before you commit, and match the 7.62mm pitch against your existing plug rather than guessing.
JMDDS is a completely different tool. This is a 5-foot Micro-USB cable built for the enormous install base of Bluetooth speakers, wireless headphones, gaming headsets and controllers that still use the older micro connector. The headline number is current: a maximum of 3A at 5V, which JMDDS frames as up to 15W, and the company states compatibility with devices drawing anywhere from 100mA to 3000mA. In practice that means the cable negotiates down for a tiny earbud case and pushes harder for a larger speaker, so you aren't stuck with a trickle charger for the bigger gear.
The five-foot length is the quiet hero here. It lets you charge from a wall socket near the bed, the sofa or the desk while the device stays in your hand or on your lap — the sort of thing that matters when a teen is watching something on a paired speaker and doesn't want it tethered to the floor. JMDDS also backs the product with a stated 365-day after-sales guarantee, which is a support promise rather than a spec, but it does tell you the company expects the cable to last.
Side-by-Side: Which Should You Choose?
• Best for a bone conduction headset or smartband → Haourlife Replacement Magnetic Charging. The 4-pin magnetic interface on a 7.62mm pitch is the whole point of this cable.
• Best for speakers, over-ear headphones and controllers → JMDDS USB Charger Charging. Micro-USB is still the default on a huge share of Bluetooth audio gear.
• Best for charging speed → JMDDS USB Charger Charging. Up to 3A and a stated 15W ceiling, versus no current rating published for the Haourlife.
• Best for reach and bedside use → JMDDS USB Charger Charging. Five feet against Haourlife's 60cm.
• Best for travel and small bags → Haourlife Replacement Magnetic Charging. Two feet of slim round cable disappears into a pocket or a pencil case.
• Best for data transfer as well as power → Haourlife Replacement Magnetic Charging. Haourlife lists data transmission support; JMDDS is described purely as a charger.
• Best for smartwatches and fitness bands → Haourlife Replacement Magnetic Charging. Small magnetic connectors are the norm there, and the short length suits a nightstand.
• Best for a gift bundle for teens → Haourlife Replacement Magnetic Charging. If the headset is an ear clip or open-ear model with a magnetic port, this is the cable that keeps the gift alive; for a micro-USB headset, go JMDDS instead.
In my opinion, the Haourlife Replacement Magnetic Charging is the one I'd buy — but only because of the situation it solves. Proprietary magnetic cables are the single most common reason a perfectly good bone conduction headset or smartband ends up in a drawer, and having a second one on hand fixes that permanently. For the teen-gift scenario this article is built around, I'd buy the Haourlife alongside an open-ear headset and keep it in the box. If your house is full of Micro-USB speakers and gaming headsets instead, the JMDDS is the smarter purchase — longer, faster, and far more broadly compatible. Check the current price on Amazon and match the connector to your device before anything else.
No. Haourlife states directly that this cable is not compatible with Bose Alto smart glasses or similar smart eyewear. It's built for 4-pin devices with a 7.62mm pitch — bone conduction headphones, smartbands and smartwatches.
Not according to the listed compatibility. The JMDDS sheet covers Charge 2, Charge 3, Charge 3 Special Edition, Flip 3, Flip 4 and Flip 4 Special Edition, but explicitly excludes Charge 4 and Flip 5. Always match your exact model to the list.
Look at the port. If it's a flat, rectangular Micro-USB socket, you want the JMDDS. If it's a magnetic plate with four pins that a plug snaps onto, measure the pin spacing — if it reads 7.62mm, the Haourlife is your replacement.
JMDDS publishes a maximum 3A current at 5V, or 15W, and supports devices drawing 100mA to 3000mA. Haourlife doesn't publish a current rating, so treat it as a standard charging and data cable rather than a fast-charge solution.
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