Matast B02 Earhook Wireless Earbuds Review: No Published Battery, Codec or IP Rating

Description

The Matast B02 is a rose colored true wireless set with an earhook shape, ASIN B0DZT5V7RM, listed since March 2025. It carries a 5.0 star average across 121 ratings and ranks 1,490th in Amazon’s Earbud and In-Ear Headphones category and 15,747th in Electronics. Those are strong commercial numbers. The listing behind them is one of the emptiest in this catalog: the product description is a copy of the title, the single feature bullet is also a copy of the title, and the specification block omits the battery entirely. This review sets out what can be confirmed, what cannot, and what to ask before buying.

What the listing actually establishes

Six things are published and can be treated as facts about the product: the shape is a hook, meaning an over ear earhook design; the driver is 13 millimeters and dynamic; Bluetooth is version 5.4; the quoted range is 15 meters; controls are touch; and the box contains two earbuds, left and right. That is the whole of it.

The earhook shape is the most useful of those. A hook wraps the top of the ear and carries the weight of the bud, so it stays put through impact rather than depending on tip pressure alone. That suits high intensity training and anyone who has lost a bud on a run. The tradeoff is bulk: hooks compete for space with glasses arms, hats and helmet straps. If the hook shape is what you want and you would prefer a listing that documents itself, the TAGRY X08 and the GNMN V7 publish considerably more.

Connection: Bluetooth 5.4 and nothing else

Bluetooth 5.4 is current. It improves connection stability and power efficiency and adds groundwork for LE Audio. It does not by itself raise sound quality, and it is not a range specification, so the 15 meter figure should be read as an optimistic line of sight number that will shorten sharply through walls and bodies.

No codec is named. There is no SBC, AAC, aptX or LDAC claim, which means the working assumption is SBC only, the baseline every Bluetooth device supports and the lowest quality tier in general use. To the listing’s credit it makes no high resolution or lossless claim either, so there is nothing here to contradict. It simply says nothing about audio quality at all.

Multipoint pairing to two devices at once is not mentioned. Neither is a companion app, transparency mode, wear detection or firmware updating. The Bluetooth profile list is absent too. Assume none of these features are present.

The ENC claim in the title

The title says “ENC Noise Cancelling Mic”. ENC is Environmental Noise Cancellation applied to the microphone: it cleans up what the person on the other end of a call hears and does nothing about the noise reaching your own ears. There is no active noise cancellation on this product, no ANC field in the specification, no microphone count and no call quality figure. Read the title as a call feature, not a listening feature.

Battery: no figure is published anywhere

This is the largest gap in the listing and the reason it is hard to recommend. There is no bud runtime, no total with the case, no charging time, no battery capacity and no quick charge figure. The Included Components field lists only “Wireless earbuds *2 (L/R)”, which does not even confirm that a charging case ships with the product, though the presence of a “Carrying Case Material: Plastic” field implies one exists.

The Batteries field reads “2 Lithium Polymer batteries required (included)”, which is Amazon’s way of recording two built in rechargeable cells, one per bud. That confirms the buds are rechargeable and tells you nothing about how long they last. Every competitor in this bracket publishes at least a total figure, so the omission is conspicuous rather than typical. If runtime matters at all to your purchase, ask the seller for both the per bud figure and the total with the case before ordering, and treat any answer that gives only a combined number as incomplete. Listings that separate the two, such as the TOZO T9, give you something you can plan around.

Fit, seal and the water claim

The Water Resistance Level field reads “Waterproof”. No IP code appears anywhere in this listing, in the title, the description or the specification. A bare word is not a rating. IPX4 covers splashes and sweat, IPX7 covers immersion, and the difference between them is the difference between surviving a rainy walk and surviving a drop into a sink. Nothing here tells you which, so the correct reading is that no water rating is published. Treat the product as sweat resistant at best, and confirm a real code with the seller before exposing it to anything more. Even a genuine rating excludes seawater, pool chemicals and pressurized water, and seals degrade with age.

The number of ear tip sizes is not published either. On a hooked design the hook holds position, but the tip still decides the seal, and a sealed bud that does not seal loses its bass and sounds thin. Budget for aftermarket tips if the fitted pair does not suit you. The 13 millimeter driver is large for an in ear design and is the one genuinely informative audio number here, though with no impedance, sensitivity or frequency response figure alongside it, it does not tell you how the set is tuned.

Because this is a sealed hooked bud with no transparency mode, it is the wrong product for cycling or road running, whatever the Theme field saying “Sports” implies. Sealing your ears removes traffic awareness. Use it in a gym, and choose an open design for road use.

Two oddities and one statistical note

The Cable Feature field reads “Detachable” on a product with no cable attached to the buds. That is inherited junk from another category. The Specific Uses field reads “Fitness” while Compatible Devices reads “Cellphones” only, which understates what any Bluetooth earbud can pair with.

The 5.0 star average across 121 ratings deserves a note. A perfectly clean average over a hundred plus ratings is uncommon on any consumer product, because normal variation in fit and expectation usually produces at least a few lower scores. It is not evidence of anything on its own, but it is unusual enough to weigh alongside a listing that publishes no battery figure. For a set with a comparable price and a documented specification, the Jabra Elite 3 is the safer purchase, and the wider shortlist is in the in ear and earbud style headphones section.

Who should buy this, and who should not

Buy it if you want an earhook bud in rose with a 13 millimeter driver and Bluetooth 5.4, you are buying largely on the customer score, and you are willing to accept that the runtime is genuinely unknown until the product arrives.

Do not buy it if battery life matters, because no figure of any kind is published. Do not treat the word “Waterproof” as a rating, since no IP code exists on the page. Do not read the ENC label as noise cancellation for the listener. And do not use it on a road bike. Before ordering, ask for the bud runtime, the total with the case, the real IP code and the number of ear tips supplied.

Additional information