If you want a simple, pink single-earpiece design for running, choose Keenso GD28; if you need listed Bluetooth 5.3 and defined battery figures, choose Sanpyl GD28. For a spec-led running choice, I’d lean Sanpyl because its sheet gives more detail about wireless connection and working time, while both models list IPX4 protection against sweat and rain.
Keenso GD28 vs Sanpyl GD28 at a Glance
• Sanpyl GD28: A single earpiece with Bluetooth 5.3, stated working time of seven hours, and one multifunction control; it also has IPX4 protection.
• Both are described for sports use, with designs intended to avoid the feeling of a conventional in-ear fit.
• Choose Keenso if its pink finish and straightforward listening design suit you; choose Sanpyl if the stated wireless and battery details matter more.
Keenso GD28 is a single earpiece intended for listening to music and handling calls. Its ergonomic design is described as fitting snugly in the ear, while the leakproof earhole is meant to limit sound reaching people nearby. The product also lists HiFi stereo sound and noise reduction. Those are useful design claims to consider, but the sheet does not provide specific measurements for sound quality or noise reduction.
For running, its clearest practical detail is IPX4 protection against sweat and rain. That makes it a candidate for workouts where perspiration or light rain is a concern, though IPX4 is not a promise that the earpiece can be submerged. The one multifunction control is intended to manage music and calls without needing separate controls for each task. The sheet does not spell out the control’s exact gestures, so buyers who want a particular play, pause, or call shortcut should not assume one.
The listed finish is pink, and the design is a single in-ear earpiece rather than a pair. That may suit someone who wants a one-sided listening option and prefers this color. A potential trade-off is the lack of stated battery-life and Bluetooth-version figures. If those details are central to your decision, Keenso gives you less to compare on paper.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Who should skip it: Skip Keenso if you need a stated working-time figure or want the product sheet to identify a Bluetooth version.
Sanpyl GD28: Who It's For
Sanpyl GD28 is also a single earpiece, with an open-ear-style design described as sitting outside the ear canal rather than creating a conventional plugged sensation. Its ergonomic shape is intended for extended wear, and the leakproof earhole is meant to limit sound leakage. For someone comparing the best headband headphones for running with smaller alternatives, Sanpyl offers a single-earpiece format instead of a band across the head.
Its sheet identifies Bluetooth 5.3 and gives a stated working time of seven hours, alongside about 800 hours of standby time and about one hour for charging. These figures give a more concrete picture of its listed wireless use than Keenso’s sheet provides. They are product specifications, not a guarantee of how long any individual charge will last in every situation. Sanpyl also lists a built-in 50mAh lithium battery and includes a USB cable in the package.
For outdoor exercise, Sanpyl is described as IPX4 water resistant against sweat and rain. That makes it relevant to runners and cyclists who want protection for ordinary workout moisture, not a device to treat as waterproof for swimming. Its single multifunction control has more specific listed gestures: one press for play or pause, a long press to reject a call, two clicks for the next song, and three clicks to redial. The trade-off is that this is still one earpiece, and the sheet does not establish that every listener will find its fit or sound ideal. Its listed color is black.
Who should skip it: Skip Sanpyl if you want a pair of earbuds or need protection beyond the listed IPX4 rating.
• For a stated working-time figure → Sanpyl GD28. Its specification lists seven hours of working time. Keenso does not provide a comparable battery figure.
• For a specified wireless version → Sanpyl GD28. Bluetooth 5.3 is listed for Sanpyl; Keenso’s sheet does not provide a Bluetooth version.
• For defined music and call gestures → Sanpyl GD28. Its control instructions distinguish single, long, double, and triple presses. Keenso lists a multifunction control but does not specify those actions.
• For a pink single-earpiece option → Keenso GD28. Pink is the listed color, while Sanpyl is listed in black.
• For a more open, non-plugged fit description → Sanpyl GD28. Its sheet specifically describes a design that does not sit in the ear canal. Keenso is described as an in-ear earpiece with an ergonomic fit.
• For a simple comparison of published battery details → Sanpyl GD28. It lists working time, standby time, charging time, and battery capacity; those figures are absent from Keenso’s sheet.
• For an option described with HiFi sound and noise reduction → Keenso GD28. Keenso lists both, while Sanpyl lists HiFi stereo sound and says its small air opening helps reduce noise. Neither sheet provides sound measurements.
The phrase IPX7 waterproof open ear headphones for running may sound like the right target if water protection is your priority, but neither of these GD28 listings specifies IPX7. Both list IPX4 protection against sweat and rain. If your intended use involves heavy water exposure or immersion, do not infer a higher rating from the word “waterproof” in a product description.
Fit is another important distinction. Sanpyl is described as sitting outside the ear canal, while Keenso’s sheet calls its fit in-ear and ergonomic. Both are single earpieces, not a two-ear set. That format may appeal to someone who wants audio in one ear, but it is not the same listening experience as a pair of earbuds or a headband-style product.
For running, the most useful contrast is the level of detail available. Sanpyl supplies battery and Bluetooth specifications, plus explicit control gestures. Keenso keeps its listed feature set more general: ergonomic fit, leakproof design, HiFi sound, noise reduction, one multifunction control, and IPX4. Those details do not prove one will sound better or last longer in practice; they simply make Sanpyl easier to assess against specific wireless-use requirements.
If you are also considering the best over ear headphones for running, remember that neither GD28 is described as a conventional over-ear model. Both are single-earpiece designs. Choose between them based on the listed fit description, controls, and battery information rather than expecting a headband or over-ear structure.
I would choose Sanpyl GD28 for running because Bluetooth 5.3, seven hours of stated working time, and specific control gestures make its everyday use easier to assess from the available details. Its IPX4 rating also matches Keenso’s for sweat and rain. I’d pick Keenso instead if I wanted the pink finish or preferred its stated in-ear fit description, but Sanpyl is my more informative choice.
Both are described for sports use and list IPX4 protection against sweat and rain. I’d lean toward Sanpyl for running if stated battery life and defined control gestures matter to you; Keenso may suit someone who prefers its pink finish.
Does either GD28 have IPX7 protection?
Sanpyl lists a working time of seven hours, standby time of about 800 hours, and charging time of about one hour. Keenso’s sheet does not give comparable battery figures.
Sanpyl GD28 lists Bluetooth 5.3. The Keenso GD28 sheet does not specify a Bluetooth version, so the available information does not support a direct version comparison.
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