sajawass BX31 Wireless Sports Earbuds

The sajawass BX31 wireless sports earbuds are in-ear Bluetooth headphones with touch controls and a listed waterproof rating. The listing also claims ear hooks, an LED battery display and up to 75 hours of total playtime with the case, but its battery claims need context before purchase.

At a glance

Touch controls are described as handling playback, calls, volume, track changes and voice-assistant activation.
The feature text claims flexible ear hooks, three tip sizes and a snug fit for sports use.
An LED display is claimed to show battery levels for the earbuds and case.
The listing describes ENC noise reduction for calls and separately lists Active Noise Cancellation.

Price

$32.99Save 76%

Reference price: ~~$139.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

The claimed ear hooks and multiple tip sizes may help buyers seeking a more secure in-ear fit for running or workouts.
The stated case-inclusive playtime and battery display could suit users who want to monitor charge between top-ups.
USB Type-C charging and touch controls are listed.

Cons

In-ear fit and the claimed ear hooks may not suit buyers who prefer open-ear designs or dislike ear tips.

Technical specifications

21 specifications

Identity
Brand	sajawass
Model	BX31

Connectivity and controls
Wireless connection listed	Bluetooth
Bluetooth version in feature claim	Bluetooth 5.3
Control methods listed	Touch
Bluetooth range	10 meters
Charging interface	USB Type C
Compatible devices	Cellphones, Tablets

Design and audio
Form factor	In Ear
Driver type	Dynamic Driver
Driver size in feature claim	13mm
Noise control listed	Active Noise Cancellation
Noise-reduction feature listed	ENC Noise Reduction

Materials and protection
Water resistance listed	Waterproof
Protection claim in feature text	IP7 nano-coating

Battery and charging claims
Playtime per charge in feature claim	over 8 hours
Total playtime with charging case in feature claim	75 hours
Full charge time in feature claim	1.5 hours

Other details
Colour	Phantom Black
Parcel dimensions and weight	10.9 x 8.9 x 3.9 cm; 140 g
Warranty description	90 DAYs

What to know before buying

Listing details to confirm

Battery claims are mode-specific only in part: the feature text gives over 8 hours per charge and 75 hours with the case, but does not clarify testing conditions or how noise control affects runtime. The listing details are inconsistent about connectivity, describing Bluetooth while also listing Auxiliary connectivity and No Jack. It also lists Active Noise Cancellation, while feature text describes ENC noise reduction for calls. The claimed IP7 nano-coating and the general Waterproof field are not accompanied by usage limits. Confirm the selected listing's intended connection and water-protection details before buying.

What’s in the box

Included

Cable
Eartip
User manual
Wireless charging case
2 wireless earbuds

Who is it for?

A good fit for

Runners and gym users looking for in-ear headphones with claimed ear hooks and several tip sizes.
Listeners who want touch controls, a charging case and an on-case battery display.

Less suited to

Buyers who require clearly documented noise-cancellation modes, battery performance by mode or specific water-use limits.
Anyone seeking open-ear headphones or a wired listening connection.

sajawass BX31 Wireless Sports Earbuds · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 52 ratings

5 stars83%83%
4 stars6%6%
3 stars6%6%
2 stars0%0%
1 star5%5%

Customer feedback highlights secure fit, sound quality, clear vocals, battery performance and the displayed battery level. These reports may matter to sports users and people who want to track charging, though they do not verify the listing's playtime, noise-control or water-protection claims. The supplied aggregate ratings are mostly five-star, with some lower ratings, so experiences are not uniform.

Positive themes

Customers report that the earbuds stay securely in place.
Feedback describes good sound, clear vocals and useful battery display information.
Customers describe battery life favourably.

Frequently asked questions

How long do the BX31 earbuds play on a charge?

The feature claim says over 8 hours per charge and up to 75 hours total with the charging case. It does not specify conditions or explain whether active noise cancellation changes those figures.

Are these earbuds suitable for workouts?

The listing describes ear hooks, three tip sizes and waterproof protection. It does not explain water-use limits, so check the specific protection claim if sweat or rain exposure matters.

Do the BX31 earbuds have active noise cancellation?

The details list Active Noise Cancellation, while the feature text describes ENC noise reduction for calls. The listing does not clearly establish whether music listening has active noise cancellation.

What comes in the package?

The listed contents are a cable, eartip, user manual, wireless charging case and two wireless earbuds. The listing does not specify the cable type or how many eartips are supplied.