If you want long over-ear listening with active noise cancellation and transparency mode for video calls, choose Monster Persona 6th; if you need compact in-ear earbuds with call-focused ENC microphones and a workout-ready fit, choose FENNIDICE Earbuds Pro 3.
The key difference is how you wear them and what you prioritize: Monster offers much longer stated battery life and three listening modes, while FENNIDICE adds an in-ear design, water resistance, and features aimed at everyday calls and activity.
• Monster Persona 6th: Over-ear headphones, active noise cancellation, transparency mode, standard mode, and up to 60 hours of battery life. The trade-off is a larger headband-and-earcup design rather than earbuds you can tuck into a small case.
• FENNIDICE Earbuds Pro 3: In-ear fit, hybrid ANC, ENC microphones for calls, IPX5 water resistance, and a charging case. The trade-off is up to 6 hours per charge, with up to 24 hours of total listening time stated in its feature details.
• Choose Monster if you want long stretches between charges, over-ear coverage, and a transparency option for shifting awareness of your surroundings.
• Choose FENNIDICE if a compact in-ear style, sweat and splash protection, and call-oriented microphone features matter more.
Monster Persona 6th is the more natural fit if you prefer headphones that sit over your ears instead of earbuds that seal inside them. Its oval earcups use memory foam, and the adjustable headband lets you change the fit. The headphones also fold, which may make them easier to pack than a rigid over-ear design, though they remain a headband-style product rather than a pocket-sized set of earbuds.
Its three listening modes give you options for different settings. Active noise cancellation is intended to reduce surrounding sound; transparency mode is designed to let more of the environment through; and standard mode provides a conventional listening setting. For video calls, the over-ear format may suit someone who wants headphones on for a long work block and then uses the same pair for music or other listening. The provided details do not specify a dedicated call microphone feature, so I would not choose Monster specifically for call pickup.
Battery life is Monster’s clearest advantage on paper: up to 60 hours, with a stated 10-minute charge providing up to 5 hours of playback. Bluetooth 6.0 is listed, and the headphones can also connect by wire. The trade-off is that this is a larger, over-ear product, and the listed noise modes do not make it water-resistant or workout-specific.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-22 · 8 min read · Independent comparison
FENNIDICE is aimed at people who want a small in-ear option for commutes, workouts, walks, and everyday calls. The earbuds include four ear tip sizes—XXS, XS, S, and L—so there are several ways to adjust the fit. That matters because an in-ear design depends on finding a comfortable seal, rather than resting around the ear like Monster’s over-ear headphones.
For calls, FENNIDICE specifies ENC microphones to help with voice pickup. Its product details also mention online meetings, video chats, and virtual classes, making it the more explicitly call-oriented pick of these two. Hybrid ANC is described as helping reduce steady sounds such as traffic, transit, and gym noise. Those are useful distinctions for someone moving between a desk, a commute, and an exercise session. ANC and ENC serve different purposes here: ANC is for listening in noisy surroundings, while ENC is presented as helping make your voice clearer on calls.
The practical extras are touch controls, Bluetooth 5.3, USB-C charging, and IPX5 water resistance against sweat and light splashes. FENNIDICE states up to 6 hours of playback from a charge and up to 24 hours total with the case in its key features. That is less uninterrupted listening than Monster’s stated 60 hours, so the case is part of the routine. One product description elsewhere gives a different total for case-supported listening; I would treat the 24-hour figure in the key feature details as the conservative comparison point.
Who should skip it: Skip FENNIDICE if you want long, uninterrupted listening with fewer charging breaks or strongly prefer over-ear headphones to an in-ear seal.
• Best for longer listening between charges → Monster Persona 6th. Its stated battery life is up to 60 hours, while FENNIDICE lists up to 6 hours per charge and up to 24 hours with its case.
• Best for ear clip headphones for video calls → Neither is an ear-clip design. FENNIDICE is the in-ear option and explicitly includes ENC microphones for calls; Monster is over-ear and does not list a dedicated call-microphone feature.
• Best transparency mode neckband headphones for video calls → Neither is a neckband model. Monster does offer transparency mode, but it is an over-ear headphone. FENNIDICE is a set of in-ear earbuds and does not list a transparency mode.
• Best fast charging gaming headphones for video calls → Monster has the clearer fast-charge detail. Its listed 10-minute charge is associated with up to 5 hours of playback. Neither product sheet describes gaming-specific features, so I would not treat either as purpose-built gaming headphones.
• Best for workouts and light splashes → FENNIDICE. Its IPX5 rating is stated to help protect against sweat and light splashes. Monster’s supplied details do not list a water-resistance rating.
• Best for adjustable listening awareness → Monster. It offers ANC, transparency, and standard modes. FENNIDICE lists hybrid ANC, but no transparency mode in the provided features.
• Best for call-focused features → FENNIDICE. ENC microphones are specifically included to help with voice pickup for phone calls and online meetings.
• Best if you want a wired connection option → Monster. Its listed connectivity includes wired and wireless use, while FENNIDICE is Bluetooth-only and has no headphone jack.
Buying Considerations
Think about the setting where you will wear them most. Monster’s transparency mode is useful if you want an option intended to let in surrounding sound without removing the headphones. FENNIDICE’s design is more oriented toward movement: its compact case, touch controls, and IPX5 water resistance fit commutes and workouts. Neither product sheet specifies how well either model handles wind, nor does it provide call-quality measurements, so I would avoid assuming either will solve every noisy-call problem.
Charging habits may settle the choice. Monster’s stated 60-hour battery life and quick-charge figure favor people who would rather recharge less often. FENNIDICE offers a case for topping up between listening sessions, but its single-charge figure is shorter. If your day involves brief calls and shorter listening stretches, carrying the case may be a reasonable fit; if you expect long sessions away from charging, Monster’s stated endurance is more appealing.
Finally, match the controls and connection to your routine. FENNIDICE uses touch controls for playback, volume, calls, and voice assistant access. Monster uses push-button controls and lists both wired and Bluetooth connectivity. Bluetooth versions differ—6.0 for Monster and 5.3 for FENNIDICE—but the supplied information does not establish how that difference would affect your particular phone, computer, or call setup. Check compatibility with the devices you plan to use, and check the current price on Amazon if price is part of your decision.
I would choose FENNIDICE Earbuds Pro 3 for video calls because it specifically lists ENC microphones for calls, along with an in-ear fit that makes sense for a mobile workday. Its IPX5 water resistance also gives it a practical edge for workouts and commutes.
I’d choose Monster instead if long battery life, over-ear comfort, a wired option, or transparency mode matters more than call-specific features. For my call-focused use, FENNIDICE is the more relevant match.
FENNIDICE is the more directly call-focused choice because its features specify ENC microphones to help with voice pickup. Monster lists ANC and transparency modes but does not specify a dedicated call-microphone feature.
Which one lasts longer on a charge?
The earbuds have an IPX5 water-resistance rating, described as protection against sweat and light splashes. They also include multiple ear tip sizes for adjusting the in-ear fit. The provided details do not specify a fit guarantee for every workout.
Monster lists transparency mode alongside ANC and standard mode. FENNIDICE lists hybrid ANC, but its supplied features do not mention a transparency mode.
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