TOZO O2 Open-Ear Wireless Earbuds, Bluetooth 5.3

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Product guide

TOZO O2 Open-Ear Wireless Earbuds, Bluetooth 5.3

TOZO O2 open-ear wireless earbuds pair an adjustable dual-axis fit with Bluetooth 5.3 and a case-inclusive battery claim of up to 42 hours. Their open design is intended for listening while remaining aware of surrounding sounds, though customer feedback also flags low volume for some users and concerns about durability.

At a glance

Dual-axis adjustment is claimed to let the earbuds move horizontally and vertically for a more adaptable fit.
Open-ear placement leaves ears unsealed, which may suit people who want to hear nearby sounds while listening.
The listing claims up to 12 hours per charge and 42 hours total with the charging case.
The feature description claims connection to two Bluetooth devices at once and single-earbud use.
The listing claims an IPX6 rating for sweat and rain exposure.

Price

$71.98Save 20%

Reference price: ~~$89.99~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Open-ear construction can help keep nearby sounds audible during listening.
Adjustable horizontal and vertical positioning may make fit easier to tailor.
The stated 42-hour total runtime includes a useful distinction from the claimed 12 hours per charge.
Dual-device connection and single-earbud use are claimed for switching between devices or listening with one earbud.

Cons

An open-ear design provides less isolation from surrounding noise than a sealed earbud design.
Customer feedback includes reports of earbuds failing and breaking, so durability may be a concern.

Technical specifications

15 specifications

Identity
Brand	TOZO
Model	T13187
Form factor	Open Ear

Connectivity and controls
Wireless connection listed	Bluetooth
Bluetooth version	5.3
Control methods listed	Touch
Device connections	Two Bluetooth devices simultaneously

Power and battery
Battery life listed	42 Hours
Playback per charge	Up to 12 hours

Dimensions and installation
Weight listed	0.02 Grams
Fit adjustment	Horizontal and vertical adjustment

Materials and protection
Water resistance listed	Water Resistant
Waterproof rating claimed	IPX6

Audio and calls
Impedance	16 Ohms
Call feature claimed	DSP call noise cancellation

What to know before buying

Battery claims are mode-dependent: the listing states up to 12 hours on one charge and up to 42 hours with the case. The case-inclusive figure is not a single-charge runtime. The detail table also lists a 42-hour average battery life, without clarifying the mode.

Listing details to confirm

Listing details are inconsistent or unconfirmed: the title identifies O2 and model T13187, while another field gives EB-P3400. Weight is listed as 0.02 Grams, and frequency response is listed as 2.4 GHz, which does not establish an audio frequency range. The detail table says Water Resistant while feature text claims IPX6. Confirm these details for the selected listing.

What’s in the box

Included

TOZO O2 True Open Ear Wireless Headphones
USB-C® (A to C) cable (20")
User manual
Wireless Charging Case

Who is it for?

A good fit for

People who want open-ear listening while staying more aware of their surroundings.
Listeners seeking adjustable positioning and touch controls for everyday use.
Buyers who want to switch between two Bluetooth devices or use one earbud at a time.

Less suited to

Listeners who need strong noise isolation or consistently high listening volume in noisy places.
Buyers for whom long-term durability is the main priority, given customer reports of failures and breakage.

TOZO O2 Open-Ear Wireless Earbuds, Bluetooth 5.3 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 4,936 ratings

5 stars68%68%
4 stars14%14%
3 stars6%6%
2 stars5%5%
1 star7%7%

Customer feedback highlights clear sound, comfort, a secure fit, battery life and awareness of surroundings. Those reported positives fit the open-ear design and the listing's long case-inclusive runtime claim, but they do not establish a particular sound performance or battery result. Feedback is mixed on volume, and some customers report failures and breakage, making low-volume listening and durability practical considerations.

Positive themes

Customers report clear sound, comfortable extended wear and a secure fit.
Customers also mention good battery life and the ability to hear their surroundings.

Negative themes

Some customers report that the earbuds stopped working or broke within a month.

Mixed feedback

Feedback on noise level varies: some value hearing surroundings, while others find the volume too low.

Frequently asked questions

How long does the TOZO O2 battery last?

The listing claims up to 12 hours of playback on one charge and up to 42 hours total with the charging case. These are different operating conditions, and the 42-hour figure is not stated as single-charge playback.

Can these earbuds connect to two devices?

The feature description claims simultaneous connection to two Bluetooth devices, with switching between audio sources. It also claims that either earbud can be used on its own.

Do the TOZO O2 earbuds block outside noise?

They use an open-ear design, intended to leave surrounding sounds audible rather than seal the ear. Customer feedback is mixed on volume, with some people reporting that it is too low.

Are they suitable for exercise or rain?

The listing claims IPX6 protection and mentions running, cycling and hiking. The details table only says Water Resistant, so confirm the protection claim for the specific listing and follow its care guidance.