Not everyone likes the sealed feeling of traditional in-ear earbuds. For listeners who prefer a lighter, more open fit, clip-on headphones offer another way to enjoy music, podcasts and calls throughout the day. The Zombies Cat B23 TWS Earclips take this approach, combining an ear-clip design with 13 mm dynamic drivers, Bluetooth 6.0 connectivity and a charging case advertised to deliver up to 30 hours of total playback.
Rather than focusing on specifications alone, this review looks at what those features could mean in everyday use, where the B23 may fit into a headphone collection, and what buyers should check before ordering.
Zombies Cat B23: Key Specifications
| Feature | Details |
|---|---|
| Product name | Zombies Cat B23 |
| Design | Open-ear clip-on, true wireless |
| Bluetooth | Version 6.0, as listed by the seller |
| Driver size | 13 mm dynamic drivers |
| Advertised playback | Up to 5 hours per charge; up to 30 hours with charging case |
| Charging case battery | 300 mAh |
| Earbud battery | 30 mAh per earbud, according to the listing |
| Charging time | Approximately 1.5 hours, according to the listing |
| Gaming mode | Low-latency mode advertised at 60 ms |
| Microphone | Built-in |
| Wireless range | Up to 10 metres, according to the listing |
| Available colours | Black, red and grey |
| Package contents | Two earphones, charging case and manual |
Specifications are based on the retailer’s product information and have not been independently tested.
1. Clip-On Open-Ear Design for a Different Wearing Experience
The B23’s most distinctive feature is its ear-clip structure. Instead of inserting an eartip into the ear canal, each earphone clips around the outer ear. This design may appeal to people who find silicone-tipped earbuds uncomfortable during extended listening.
An open-ear fit can also make it easier to hear some sounds from your surroundings while listening. That can be useful when working at home, walking in familiar areas or listening to spoken content while completing everyday tasks.
However, open-ear headphones are not a substitute for hearing protection. They also do not guarantee that you will hear approaching vehicles, alarms or other hazards. Environmental awareness depends on the surroundings, listening volume and individual hearing.
Comfort is another factor that varies from person to person. Buyers should consider the shape of the clip, pressure around the ear and stability during movement rather than assuming that every open-ear design will fit everyone equally well.
For another example of this design, see our Aigo CJ339 open-ear headphones review, which explores a similar ear-clip format with Bluetooth 6.0 connectivity.”
2. What Do the 13 mm Dynamic Drivers Mean for Sound?
The Zombies Cat B23 uses 13 mm dynamic drivers. Driver diameter is one part of headphone design, but a larger driver does not automatically mean better sound.
The final listening experience also depends on acoustic tuning, the position of the speaker relative to the ear, enclosure design and how effectively the headphones direct sound. With open-ear earphones, bass perception can differ from that of sealed in-ear models because less sound is isolated from the surrounding environment.
For music, the B23’s driver specification provides a useful starting point, but buyers should not assume it guarantees powerful bass, studio-level detail or a wide soundstage without independent listening tests.
These headphones may be worth considering for everyday playlists, podcasts and video content if you prefer an open fit. If strong bass, passive isolation or a fully immersive listening experience is your priority, conventional in-ear earbuds may be a better match.
You can also compare the B23 with the Monster AC390 open-ear TWS earbuds, another open-ear model listed with 13 mm drivers.
3. Bluetooth 6.0 for Wireless Listening
The product listing identifies Bluetooth 6.0 as the B23’s wireless connection standard. The earphones are intended for compatible Bluetooth devices, including smartphones, tablets and other supported audio sources.
The listing also specifies a transmission distance of up to 10 metres under suitable conditions. Actual range can vary with walls, interference, the connected device and other environmental factors.
A newer Bluetooth version alone does not guarantee better audio quality or a stronger connection in every situation. Codec support, device compatibility, antenna design and software also matter. The listing names common Bluetooth audio and calling profiles, including A2DP and HFP, but does not establish support for advanced high-resolution audio codecs.
For buyers, the practical questions are straightforward: how easily do the earphones pair, how consistently do they reconnect, and does audio remain stable during normal use? Those details require real-world testing rather than relying on the Bluetooth version number alone.
4. Up to 30 Hours of Playback: How the Battery Claim Works
Battery life is one of the B23’s headline features. According to the product listing, the earphones provide up to five hours of playback on a single charge, while the charging case supplies additional power for a claimed total of 30 hours.
That distinction matters. The 30-hour figure represents the advertised combined listening time with the case, not 30 hours of continuous playback from the earphones themselves.
The actual result may be lower depending on listening volume, call duration, connection conditions and the type of audio being played. People who use headphones for long work sessions should pay particular attention to the five-hour per-charge figure and how often they will need to return the earphones to the case.
The listing gives a charging time of around 1.5 hours. It does not provide independent battery-test results, so treat these numbers as manufacturer or retailer claims rather than guaranteed performance.
5. Low-Latency Gaming Mode: Useful Beyond Music?
The B23 advertises a gaming mode with latency as low as 60 milliseconds. Reduced audio delay can make games and videos feel better synchronized, particularly when sound cues need to match on-screen action.
For casual mobile gaming, a low-latency mode could be a useful extra. It may also help with some video content, although the result depends on the phone, app and connection.
The advertised latency figure should not be interpreted as a guarantee across all games or devices. The listing does not establish the testing conditions behind the 60 ms claim, and wireless audio delay can vary in practice.
Competitive players should also consider sound positioning, microphone performance and comfort. A low-latency specification alone does not make a headset suitable for esports, and the B23’s open-ear construction may offer less isolation than a conventional gaming headset.
6. Touch Controls and Hands-Free Calls
Touch controls are designed to let users manage common functions without repeatedly reaching for a phone. The B23 listing identifies touch operation and a built-in microphone, making calls and basic playback control part of its intended use.
For commuting, household tasks or a desk setup, these features can reduce the need to handle a connected device. However, the retailer’s specifications do not fully explain which gestures control playback, volume, calls or gaming mode. Buyers should check the supplied manual for the exact controls.
The presence of a microphone also does not guarantee clear calls in noisy places. Background-noise handling, voice pickup and wind resistance are not established by the headline specifications. If call quality is a priority, independent microphone samples or user reviews would be more informative than the feature list alone.
7. Who Should Consider the Zombies Cat B23?
The B23’s feature combination makes it most relevant to people who want an alternative to conventional in-ear earbuds.
It may suit:
- Listeners who dislike having eartips inserted into their ear canals.
- People who prefer an open-ear design for casual listening.
- Smartphone users who want wireless audio for music, podcasts and calls.
- Casual gamers interested in a dedicated low-latency mode.
- Buyers who prefer a charging case and an advertised 30-hour combined playback figure.
It may be less suitable for:
- People who need strong passive noise isolation for planes or noisy commutes.
- Listeners who prioritise powerful bass or a fully enclosed sound.
- Competitive gamers who require independently verified latency and precise positional audio.
- Buyers who need proven water resistance, active noise cancellation or advanced call-noise reduction, none of which is established in the listed specifications.
8. What to Check Before Buying
Before placing an order, consider these practical points:
- Fit: Check the ear-clip shape and available product images to see whether the design looks suitable for your ears.
- Battery expectations: Remember that five hours is the listed playback time per charge, while 30 hours includes the charging case.
- Call quality: Look for independent microphone tests if you frequently take calls outdoors or in busy environments.
- Gaming performance: Treat the 60 ms figure as an advertised claim until testing confirms how it performs on your device.
- Sound leakage: Open-ear headphones can allow some sound to escape, especially at high volume. Directional sound claims do not mean leakage is eliminated.
- Compatibility and returns: Confirm that the earphones work with your phone and check current shipping, warranty and return terms on the product page.
Final Verdict
Zombies Cat B23 stands out primarily because of its clip-on open-ear design, rather than any single specification. Bluetooth 6.0, 13 mm dynamic drivers, touch controls, a gaming mode and a claimed 30 hours of total playback give it a feature set aimed at everyday wireless listening.
Its biggest potential advantage is the alternative wearing style. For people who dislike conventional in-ear earbuds, that may matter more than a long specification list. The trade-offs are equally important: open-ear headphones generally provide less isolation, while sound quality, comfort, microphone performance and real battery endurance still need practical verification.
If the B23’s fit and feature mix match your needs, review the current listing, available colour options and return policy before buying.