We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-17 · 7 min read · Independent comparison
If you want open-ear awareness plus a built-in mic for calls, choose GZCRDZ Air Conduction Open; if you need a durable replacement aux cable for Beats or Sony wireless headphones, choose Callez Beats Headphones Replacement. These two products are not really rivals — they solve completely different problems, and mixing them up is the fastest way to buy the wrong thing. One is a wearable headphone; the other is a spare cable that brings an existing pair of headphones back to life.
• GZCRDZ Air Conduction Open — biggest strength: An open-ear design that keeps you aware of traffic, bells and surrounding sound while you listen, plus a built-in noise-reduction microphone with a mute button.
• GZCRDZ Air Conduction Open — biggest trade-off: It is wired only (3.5mm jack, no Bluetooth) and has no active noise cancellation, so you cannot pair it with a phone that lacks a headphone jack without an adapter.
• Callez Beats Headphones Replacement — biggest strength: A 5.02 ft male-to-male 3.5mm aux cable with 24K gold-plated plugs and oxygen-free copper wiring, built to survive twisting, pulling and tangling.
• Callez Beats Headphones Replacement — biggest trade-off: It carries no microphone and no volume control, and it only fits the specific Beats, Sony and other models listed in its compatibility notes — not Bose or JBL.
• Who should pick GZCRDZ: Runners, cyclists, drivers and anyone who wants to hear their surroundings and take calls hands-free.
• Who should pick Callez: Owners of Beats Solo/Studio or Sony WH-series headphones who need a reliable wired connection or a replacement for a lost or frayed cable.
The GZCRDZ Air Conduction Open is built around one idea: don't seal off your ears. The earpieces rest on the outer ear rather than plugging into the canal, so music and audio sit alongside the sounds around you. For a runner hearing a car approach, or a cyclist catching a bell behind them, that awareness is the whole point. The earhook shape is designed to stay put through movement, and the ABS body in black keeps the look understated.
At 18 g (listed as 15 g in the item weight field), it is light enough that you are unlikely to notice it on long sessions. It is rated IPX4 for rain and sweat, which covers typical running, cycling and gym conditions — not swimming or heavy downpours. The 16 mm driver, 16 Ω impedance, 116 dB sensitivity and 20–200000 Hz frequency range are the kind of numbers that pair easily with phones, laptops and tablets over the 3.5 mm jack. A 1.3 m cable gives you room to move, and the inline remote handles playback, volume and calls.
The built-in noise-reduction microphone is the feature that separates it from a plain pair of sport earbuds. There is a mute button to switch the mic on and off, which is genuinely useful for online classes, live broadcasts and study sessions where you want to talk without holding anything. The listing mentions bone conduction in its model details, and the open-ear, on-the-outer-ear placement matches that description.
Who should buy it: people who want awareness-first listening, a wired connection they never have to charge, and a mic for calls or class. Who should skip it: anyone who wants Bluetooth freedom, active noise cancellation for flights or open-plan offices, or a cable-free setup. If your phone has no 3.5 mm jack, budget for an adapter. There is a 1-year warranty.
The Callez Beats Headphones Replacement is not a headphone. It is a 3.5 mm to 3.5 mm aux cable, 5.02 ft (153 cm) long, designed to plug into a headphone on one end and a phone, laptop, tablet, controller or console on the other. If your Beats Solo or Studio headphone has a dead battery, a damaged factory cable, or you simply prefer a wired connection for zero-latency audio, this is the part that fixes it.
The build is where the attention went. The plugs are 24K gold-plated and corrosion-resistant, and the wiring uses oxygen-free copper inside a TPE jacket. In plain terms, that combination is meant to keep the signal clean and the cable alive through everyday abuse — twisting, pulling, tangling in a bag. Callez also lists short circuit protection, a tangle-free design and a lightweight feel. The straight, round cable is easy to coil and carry.
Compatibility is broad but specific. It is listed as working with Beats Solo2, Solo3, Studio 2, Studio 2.0, Studio 3, Studio 3.0, Studio Wireless and HD Pro, plus Sony WH-1000XM5, XM4, XM3, WH-CH720N, WH-CH710N, WH-CH700N, WH-XB910N and others, along with Skullcandy, Audio-Technica, Soundcore and AKG models that use the same jack. It also connects to phones, computers, Macs, iPads, iPods, tablets and PS4/PS5, Xbox and Switch controllers that have a single 3.5 mm port.
Who should buy it: Beats or Sony wireless headphone owners who want a dependable wired cable, gamers plugging into a controller, and anyone replacing a lost or frayed cord. Who should skip it: anyone expecting to make calls through it, or anyone with Bose or JBL headphones.
Side-by-Side: Which Should You Choose?
• Best for staying aware of your surroundings → GZCRDZ Air Conduction Open, thanks to its open-ear, on-the-ear design.
• Best for hands-free calls and online classes → GZCRDZ Air Conduction Open, with its noise-reduction mic and mute button.
• Best for replacing a broken Beats or Sony cable → Callez Beats Headphones Replacement.
• Best for sweat and light rain → GZCRDZ Air Conduction Open, rated IPX4.
• Best for durability under daily abuse → Callez Beats Headphones Replacement, with gold-plated plugs and oxygen-free copper wiring.
• Best for a no-charge, no-pairing setup → Both are wired — but only GZCRDZ is a complete listening device; Callez needs headphones you already own.
• Best for gaming and consoles → Callez Beats Headphones Replacement, which plugs into PS4/PS5, Xbox and Switch controllers (Xbox needs its own adapter).
• Best for pure sound quality from premium headphones → Callez Beats Headphones Replacement, because it lets your existing Beats or Sony drivers do the work.
My Verdict
No. It is a wired headphone with a 3.5 mm jack and a 1.3 m cable. There is no Bluetooth, so it never needs charging, but your device needs a headphone jack or an adapter.
No. Callez states clearly that this cable has no built-in microphone and no volume control — it is audio only. If you need calls, the GZCRDZ is the one with the mic.
Only if your model is listed. It fits Beats Solo2/Solo3, Studio 2/Studio 3 and HD Pro, plus several Sony WH models and other 3.5 mm headphones. It does not fit Bose or JBL.
Then buy the Callez cable — it is the cheaper way to keep using headphones you already like, especially if the original cord is damaged or lost. If you don't own headphones, buy the GZCRDZ.
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