If you want lightweight, wired headphones for running, choose ELECDER i45; if you need a portable 88-key piano for practice, choose MARVTOWN 88Keys. These products serve very different purposes, so the practical choice is clear: the i45 is the only one designed to be worn for listening, while the MARVTOWN is a foldable instrument for making music. Neither is a substitute for the other.
If you want lightweight, wired headphones for running, choose ELECDER i45; if you need a portable 88-key piano for practice, choose MARVTOWN 88Keys. These products serve very different purposes, so the practical choice is clear: the i45 is the one designed to be worn for listening, while the MARVTOWN is a foldable instrument for making music. Neither is a substitute for the other.
ELECDER i45 vs MARVTOWN 88Keys at a Glance
• MARVTOWN 88Keys strength: A portable roll-up piano with 88 keys, multiple tones and rhythms, and headphone and MIDI connections; trade-off: its short, unweighted key travel is not the feel of a traditional weighted piano.
• ELECDER i45 is for: Someone who needs a simple wired headset for a compatible phone, computer, or tablet, including for listening while moving.
• MARVTOWN 88Keys is for: A beginner who wants a foldable keyboard for practice, music-making, or travel, rather than headphones for listening.
• The “vs” in this comparison is a little unusual: one product is a headset and the other is a keyboard. If you arrived looking for gaming headphones for running, the product names may have led you to expect two competing headsets. They are not. The ELECDER i45 is the relevant option for listening; the MARVTOWN is an instrument with a headphone jack, not a pair of headphones.
• That distinction matters more than any small feature comparison. For running, a wired on-ear headset is at least the right category of product, though the cord and fit deserve consideration. For piano practice, the 88-key MARVTOWN offers far more relevant equipment. I would not buy either expecting it to do the other’s job.
The ELECDER i45 is a wired, on-ear headset with a 3.5 mm jack, a 40 mm dynamic driver, and a foldable design. Its adjustable headband is described as suitable for different head sizes, and the product information suggests it can be worn by children and adults. The foldable form is a useful detail if you want headphones that can be packed away for travel or stored between uses.
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
For running, its strongest case is straightforward: it is a listening device, it connects through a standard 3.5 mm jack, and it does not need to be charged. But it is still a wired on-ear design. The 1.5 m cord can move around during a run, and the headset does not have built-in volume buttons, so volume changes must be made on the connected device. I would check how your device handles a 3.5 mm connection before choosing it; some devices may need an adapter, which is not included for certain models.
The i45 makes more sense for someone seeking basic wired headphones for a compatible phone, tablet, Chromebook, computer, or other device with a headphone jack. Its listed frequency range is 20 Hz to 20,000 Hz, and it has sound isolation, but those details do not establish how it will sound or fit for every listener. If you need wireless freedom, on-headset volume controls, or a dedicated sports-earbud design, this is not the match I would choose. It is an on-ear headset, not a set of earbuds, and the product information recommends it for children over age 8.
The MARVTOWN 88Keys is a foldable digital piano for beginner practice and music-making. It has 88 standard keys, 128 tones, 108 rhythms, demonstration songs, and built-in speakers. Its roll-up design is aimed at portability, while the rechargeable battery is described as providing about four hours of use at default volume without external devices connected. A full charge takes about two and a half hours, according to the product details.
Its connections give beginners room to experiment. There is a 3.5 mm headphone jack for private listening, a microphone input, a pedal port, a line-in connection, and USB MIDI support. The listing also describes connection to MIDI-compatible software and certain named piano apps. That makes this a plausible choice for someone who wants to practice quietly, try different sounds, connect music for backing tracks, or explore MIDI without committing to a traditional piano setup.
The trade-off is the playing feel. The keys are unweighted, with about 5 mm of travel, so this is not presented as a realistic substitute for a weighted piano. The product information says the key width is 2 cm and describes the keyboard as suitable for finger practice, but anyone focused on developing the feel of an acoustic or weighted instrument should keep the difference in mind. It also needs careful handling: the flexible internal circuit is a reason to avoid forceful folding. If you are shopping for headphones for running, this keyboard is simply the wrong category; its headphone jack lets you connect headphones, but it is not itself a headset.
Side-by-Side: Which Should You Choose?
• Best for listening while running → ELECDER i45. It is the only one of these two products that is a pair of headphones. Its 1.5 m cord is a practical drawback during movement, so consider whether a wire suits your routine.
• Best for beginner piano practice → MARVTOWN 88Keys. Its 88 keys, tones, rhythms, and demonstration songs are musical-instrument features the i45 does not have.
• Best for a wired 3.5 mm headset → ELECDER i45. It connects to devices with a compatible headphone jack. Some newer devices may require an adapter, and the product information says one is not included for certain models.
• Best for private keyboard practice → MARVTOWN 88Keys. Its 3.5 mm headphone jack provides a headphone connection, although the headphones themselves are not included in the listed package contents.
• Best if you want to avoid charging your headphones → ELECDER i45. It is wired, so it does not depend on a rechargeable headphone battery. You will still need a compatible device to play audio.
• Best for a portable instrument → MARVTOWN 88Keys. It rolls up and can run on its rechargeable battery or a suitable power source, but its flexible construction calls for careful handling.
• Best for someone searching for with mic sports earbuds for running → Neither is a close match. The i45 is an on-ear wired headset, not earbuds, and the MARVTOWN has a microphone port for singing while playing rather than being a headset with a built-in microphone.
A common search phrase like “best gaming headphones for running” suggests a specific kind of listening gear, but these two products do not form a true gaming-headset comparison. The i45 is the only one that can serve as headphones. The MARVTOWN has a headphone jack for listening to its keyboard through separate headphones; that does not make it a pair of gaming headphones for running.
So the decision is less about picking a winner on shared features and more about buying the correct kind of product. If you want to listen to audio, focus on the i45 and decide whether its wired on-ear design fits your movement and your device. If you want to play piano, the MARVTOWN’s 88 keys and practice-oriented features are the relevant reasons to choose it.
My Verdict
I would choose the ELECDER i45 if my immediate need were wired headphones for running, because it is the only one of these products designed to be worn for listening. I would keep expectations realistic: its cord, on-ear fit, and lack of volume buttons may be inconvenient during exercise. For piano practice, I would choose the MARVTOWN instead. My running recommendation is the i45, but neither product is a dedicated wireless sports-earbud option.
FAQ
Can I use the MARVTOWN 88Keys as headphones for running?
No. It is a roll-up digital piano, not a headset. It has a 3.5 mm headphone jack so you can connect separate headphones when playing the keyboard.
It is the only listening headset in this comparison, and it uses a wired 3.5 mm connection. The 1.5 m cord may be awkward during running, and there are no volume buttons on the headset. Whether it suits you will depend on your device and comfort with a cord while moving.
Yes. The keyboard includes a 3.5 mm headphone jack for connecting headphones. The listed package contents specify the roll-up piano only, so you should plan to use separate headphones if you want private practice.
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