Sisism i33 Single-Ear Bluetooth Headset

The Sisism i33 is a single-ear Bluetooth headset with touch controls and a charging case. The listing claims up to 55 hours of combined talk or music time, but gives conflicting Bluetooth-range and per-charge battery details, so treat those figures as claims to confirm rather than guaranteed runtimes.

At a glance

Single-ear earpiece with a hook-shaped design, touch controls, and a charging case listed in the package.
The feature text claims 18–23 hours of continuous use per earpiece and 55 hours of total talk or music time with the case.
Bluetooth 5.4 and connection to two Bluetooth devices at once are claimed in the feature text.
The listing describes environmental noise cancellation and a CVC 6.0 microphone noise-cancellation feature.

Price

$23.98Save 89%

Reference price: ~~$209.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Single-ear design leaves the other ear free for awareness of nearby sounds.
Touch controls and stated support for two connected Bluetooth devices may suit switching between a phone and computer.
The package list includes a charging case, Type-C cable, manual, and three eartip sizes.

Technical specifications

23 specifications

Identity
Brand	Sisism
Model	i33

Connectivity and controls
Wireless connection listed	Bluetooth
Bluetooth version	5.4
Bluetooth range in details	15 meters
Control methods listed	Touch
Compatible devices	iPhone, Andriod, Cellphones, Desktops, Laptops, Tablets, All Smart Devices with Bluetooth

Design and materials
Form factor	On Ear
Ear placement	In Ear
Earpiece shape	Hook
Color	Black Solid
Enclosure material	Plastic

Materials and protection
Water resistance listed	Waterproof

Other listed features
Noise control	Environmental Noise Cancellation
Headphone jack	No Jack
Additional features	Fast Charging, Portable

Manufacturer-claimed operating details
Charging case capacity	400mAh
Combined talk or music time with case	55 hours
Continuous use per earpiece on one charge	18–23 hours
Full recharge time	1.5 hours
Charging port	Type-C
Microphone noise cancellation	CVC 6.0
Simultaneous Bluetooth device connections	two Bluetooth devices at once

What to know before buying

Listing details to confirm

Listing details conflict or are not confirmed: the Bluetooth range is given as 15 meters in the details and 10 meters in feature text, and the listed form factor is On Ear while ear placement is In Ear. The feature text claims 55 hours with the case and 18–23 hours per charge, while another highlight states 55 hours of talking time. Confirm the expected fit, range, and runtime for the selected listing. The waterproof claim has no stated rating.

What’s in the box

Included

Single-ear Bluetooth headset ×1
Type-C cable ×1
User manual
Wireless charging case
S eartip
M eartip
L eartip

Who is it for?

A good fit for

People seeking a single-ear Bluetooth headset for calls or general listening.
Buyers who want touch controls and a listed charging case with multiple eartip sizes.
Users intending to pair a headset with Bluetooth-enabled phones, computers, tablets, or similar devices.

Less suited to

Anyone who needs a confirmed water-resistance rating or dependable runtime and range specifications before purchase.
Buyers looking for a conventional over-ear or stereo headset.

Sisism i33 Single-Ear Bluetooth Headset · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.9 / 5 · 18 ratings

5 stars91%91%
4 stars9%9%
3 stars0%0%
2 stars0%0%
1 star0%0%

The supplied evidence includes aggregate ratings but no customer-comment summaries, so it does not establish specific praised features or complaints. The rating distribution is mostly five-star with some four-star ratings, based on a small sample. Treat that as limited overall sentiment, not evidence that the claimed battery life, fit, noise cancellation, or connection performance has been confirmed by customers.

Frequently asked questions

How long does the Sisism i33 run on a charge?

The feature text claims 18–23 hours of continuous use per earpiece and 55 hours total with the case. Another listing highlight gives 55 hours of talking time. These are listing claims, and the details are inconsistent.

What Bluetooth range does the listing give?

It lists 15 meters in the product details and 10 meters in feature text. Confirm the applicable range before relying on it.

Can it connect to two devices at once?

The feature text claims simultaneous connection to two Bluetooth devices. Confirm this capability for your intended devices if it is essential.

What comes in the package?

The stated contents are one single-ear Bluetooth headset, one Type-C cable, a user manual, a wireless charging case, and S, M, and L eartips.